Most African elephants have tusks, but some never grow them especially in places that have a history of poaching, like Gorongosa National Park. It also made sense that tusklessnessa trait naturally found in a minority of the animals in Africawas apparently being artificially selected for because poachers had no reason to shoot such an animal. Learning Objectives & Practices: ERT-2.A, ERT-2.H, EIN-4.C, SP5, SP6, ELA.RST.9-12.7, ELA.WHST.9-12.1 316 0 obj
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This interactive module explores the phases, checkpoints, and protein regulators of the cell cycle. Please see the Terms of Use for information on how this resource can be used. Math.N-Q.A.1, Math.N-Q.A.3, Math.S-IC.3; MP2, MP3, IB Environmental Systems and Societies (2017), Teaching an Online Introductory Biology Lab Using Evolution and Ecology Resources, Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International license, Why no tusks? Scientists are trying to determine the genes involved in tusk development and how variations in these genes can lead to tusklessness. 0
Shane Campbell-Staton of Princeton University, co-lead author of the new paper, has spent his career studying the ways that humans force such evolutionary changes across the tree of life. a. This video presents an intriguing phenomenon: two patients who carry the same genetic variation, which is known to cause sickle cell disease, have very different outcomes. Watch the . In this study, scientists used DNA profiling to determine where ivory seized from poachers had originated. Knowledge awaits. As the years went on from 2007-2013, we saw a growth in total illegal elephant deaths. As of 2014, about 350,000 savanna elephants were living in Africa. In this activity, students collect and analyze evidence for each of the major conditions for evolution by natural selection to develop an explanation for how populations change over time. hb```lRB We know we have a lot of work to do to address racial inequities in science teaching. Resume watching the video until 2 415 0 obj
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k1]8Ay0 Ik@ +Xndi) g[! Elephants with large tusks are targeted by poachers who sell the tusks on the ivory market. This data-driven activity accompanies the video Selection for Tuskless Elephants. To learn more about the problems facing African elephants and their recovery in Gorongosa National Park, watch these two BioInteractive Scientists at Work videos: the first minute of The Great Elephant Census and all of Selection for Tuskless Elephants. If you're interested in using facilitated discussions to promote scientific literacy and empower students to make evidence-based decisions, this article from professor Holly Basta details how she restructured her course to promote student questioning and talk. %%EOF
If we keep the pressure off these elephants, the rate of tusklessness declines with each generation., Rachel Nuwer is a freelance science journalist and author who regularly contributes to Scientific American, the New York Times and National Geographic, among other publications. Selection for Tuskless Elephants. hbbd```b``"WHg -,^ This video follows ecologist Caitlin O'Connell-Rodwell, who is studying how elephants can communicate over long distances using low-frequency sounds that travel both in the air and through the ground. Additionally, disruptions to the same region of the X chromosome in humans is associated with a syndrome that usually causes male fetuses to abort in the second trimester. hbbd```b``"WH&. lz`f1,f u d Vi 2D7e@l( XDrG;".|`10H-v9Pl=0 u
Explore our digital archive back to 1845, including articles by more than 150 Nobel Prize winners. In this inquiry-based activity, students engage in science practices to figure out why some people with a genetic condition that usually leads to sickle cell disease do not have disease symptoms. Why Do Some People with the Sickle Cell Genotype Not Have Symptoms? Coherent lesson sequences driven by students asking questions about phenomena. Teaching an Online Introductory Biology Lab Using Evolution and Ecology Resources, Why no tusks? To prevent his AP Environmental Science students from having "problem fatigue," Florida educator Scott Sowell focuses on how environmental solutions are developed, justified, implemented, and evaluated. 0
Create your free account or Sign in to continue. It engages students in analyzing data to make evidence-based claims about the occurrence of tusklessness in elephant populations. This video follows the work of researchers conducting the first census. In population simulations, the researchers confirmed that it is extremely unlikely that tusklessness would have changed so drastically by chance alone. Tusklessness, according to a new paper in Science, can be attributed in large part to a dominant mutation on the X chromosomea genetic change that also explains the sex skew Poole saw. In .
Elephants were not an obvious choice for Campbell-Staton, who has mostly focused on lizards until now. Propose a claim supported by scientific evidence to answer a research question. Determine whether scientific results confirm or contradict a hypothesis. hhmi biointeractive tuskless elephants answer key About; Location; Menu; FAQ; Contacts Discover implementation ideas, lesson sequences, resource modifications, quick tips, and more in this collection of videos and in-depth articles. %%EOF
IB Environmental Systems and Societies (2017). As poaching in Gorongosa has been stamped out through sustained conservation efforts, the number of baby elephants born tuskless has begun to decrease. a. 2. This is a beautiful study that is certain to become a textbook example of how intense human exploitation of wildlife can rapidly change the natural world, says Jeffrey Good, a mammalian evolutionary geneticist at the University of Montana, who was not involved in the research. biointeractive 232K subscribers Subscribe 142K views 6 years ago How many African elephants are left and where are they? %%EOF
The sex ratio of the offspring of tuskless mothers also indicated that the genetics responsible may be lethal for males. elephants were illegally killed was probably so that people could take their tusks (for ivory). 3. a. Campbell-Staton and his co-first author, Brian Arnold of Princeton, were able to join forces with the other researchers to collect blood samples from 18 femalessome with tusks and some withoutthat would meet the genomic requirements for the project. Discover tools to help plan lessons and opportunities to support professional learning. Tusklessness, according to a new paper in Science, can be attributed in large part to a dominant mutation on the X chromosome a genetic change that also explains the sex skew Poole saw. Only Meat: 19/129 * (100%) = 14.73% b. The Resource Google Folder link directs to a Google Drive folder of resource documents in the Google Docs format. |U#62RF>^/,[4@[S5MT3M_q+; u* English; analyzing data on tuskless elephants biointeractive answer key. Please see the Terms of Use for information on how this resource can be used. 11{TO8+J1FOf%E%12Xbtb?S`8,A 7 \K(Dc6@ UJ
Poaching tips scales of elephant evolution, The Genetics of Tusklessness in Elephants, Using Genetic Evidence to Identify Ivory Poaching Hotspots, Using Data to Investigate Elephant Evolution, Developing an Explanation for Tuskless Elephants, Moth Mimicry: Using Ultrasound to Avoid Bats. Poaching tips scales of elephant evolution, The Genetics of Tusklessness in Elephants, Using Genetic Evidence to Identify Ivory Poaching Hotspots, Using Data to Investigate Elephant Evolution, Developing an Explanation for Tuskless Elephants, Allele and Phenotype Frequencies in Rock Pocket Mouse Populations, Color Variation Over Time in Rock Pocket Mouse Populations, Look Who's Coming for Dinner: Selection by Predation, The Making of the Fittest: Natural Selection and Adaptation, Developing an Explanation for Mouse Fur Color, Simulating Evolution of a Rock Pocket Mouse Population. a. Pooles observationswhich were used a few months later to support a ban on international ivory tradewere alarming, but they mostly made sense. Data Points are useful resources that use figures from the primary literature and guided sets of supporting questions. More than 30 years later, she finally may have her answer. The Google Drive folder is set as View Only; to save a copy of a document in this folder to your Google Drive, open that document, then select File Make a copy. These documents can be copied, modified, and distributed online following the Terms of Use listed in the Details section below, including crediting BioInteractive. The module also shows how mutations in genes that encode cell cycle regulators can lead to the development of cancer. Many families lacked older femalesand many of those females had no tusks. Using those samples, they identified candidate regions in the genome that, when mutated, seemed to explain tusklessness and its apparent male lethality. II. chromosome, differences in sex development (DSD), estrogen, Olympics, ovary, primary/secondary sex characteristic, sex determining region Y (SRY), testes, testosterone, X inactivation. %PDF-1.6
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Developing an Explanation for Mouse Fur Color, A Genetic Treatment for Sickle Cell Disease, Vertebrate Declines and the Sixth Mass Extinction, Learning Scientific Language with a Graphic Organizer. This activity guides the analysis of a published scientific figure from a study involving illegal elephant poaching. ea`|wC"bSfoxjtZ&T2(i+q,|:m!J@ dP6H
EEH6~SlL.3a5, But the proportion of tuskless elephants has increased in some populations. This film describes natural selection and adaptation in populations of rock pocket mice living in the American Southwest. In females, mutations in a key gene on one of their X chromosomes seems to be responsible for tusklessness. Ordered sequences of BioInteractive resources for teaching a course, unit, or lesson. But why werent there any tuskless males?. Students use scientific evidence and reasoning to construct an explanation of and develop an argument for tusklessness in elephant populations. Poaching brings evolutionary pressure for tusklessness. Researchers have pinpointed how years of civil war and poaching in Mozambique have led to more elephants that will never develop tusks. Nature, in this case at least, seems to be correcting itself. 0
video until time 1:46 and answer the following questions. As you watch the videos, complete the questions from the "Task 1" handout. The Click & Learn uses ongoing debates about the eligibility of certain female athletes to participate in women's events as an entry point for students to learn the processes involved in human reproductive development. 2023 Scientific American, a Division of Springer Nature America, Inc. II. In this activity, students work with authentic research data to explore the impact of poaching on African elephants. Answers may vary. This activity explores images of elephants with and without tusks, which serve as phenomena for learning about selection and human impacts on the frequency of traits within populations. One type of evidence they use is genetic data. This interactive module explores examples of how changes in one species can affect species at other trophic levels and ultimately the entire ecosystem. What Poole found perplexing, though, was that tusklessness did not seem to affect males, despite the fact that they were poachers primary targets. This data-driven activity accompanies the video Selection for Tuskless Elephants. %PDF-1.6
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Their current rate of decline is 8% per year, primarily due to illegal killing called poaching. Students apply what they have learned to evaluate the results of different tests that have been used throughout sports history to qualify female athletes to compete. This study is among the first to show that selective killing of large vertebrates can have a direct impact on evolutionary change, says Fanie Pelletier, an ecologist at the University of Sherbrooke in Quebec, who co-authored a perspective piece in Science about the research. Using Data to Investigate Elephant Evolution, The Genetics of Tusklessness in Elephants, Developing an Explanation for Tuskless Elephants, Using Genetic Evidence to Identify Ivory Poaching Hotspots. Planarians can be used to investigate a variety of biological phenomena like animal behavior, mitosis, taxonomy, and more. Watch the . Describe how mutations in a variety of genes can affect the development of internal and external sex characteristics. These declines may be a part of Earths next mass extinction. 7. Watch the Selection for Tuskless Elephants video until time 1:46 and answer the following questions. Most African elephants have tusks, but some about 2% to 6% of females and even fewer males never grow them. This activity builds on information presented in the video Selection for Tuskless Elephants. Hear how educators are using BioInteractive content in their teaching. Video Activity 7. (The first six weeks, as well as the culminating project . The human immune system is made up of many cells, organs, and tissues. The researchers first needed to determine whether it was actually the selection from poaching that led to a disproportionate number of tuskless individuals or if it was just some fluke of chance that emerged as the population crashed. Some prevent pathogens from entering the body, and some attack pathogens already inside the body. Answers Biointeractive Hhmi - Effebi.biella.it.
This tool can be used to add pause points, questions, and labels to any BioInteractive video. Most African . 293 0 obj
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In this video, Poole explains a possible reason. Not only do animals die due to poaching, but there is also additional decline because half of the male offspring from the surviving tuskless mothers do not survive., Good agrees that the findings are alarming. Meat Only: 19 b. Tusks Only: 75 c. Meat and Tusks: 27 4. Scientific Explanation of Evolution by Natural Selection. But in males with no other X chromosome to fall back on, that mutation appears to cause death in the womb. In Gorongosa National Park, Poole found that among the older female elephants that survived a period of heavy poaching in the park, over 50% are tuskless. Selection for Tuskless Elephants. Thanks for reading Scientific American. Look up the definition of the term poaching and summarize your understanding of what it means in the space below. The resource is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International license. All workshops are online, facilitated by Ambassadors, and include opportunities to interact with our resources and learn from other educators. Africa, adaptation, Gorongosa, microevolution, scientific methodology, scientific process, selective pressure, trait. Not all downloadable documents for the resource may be available in this format. Scientific Explanation of Evolution by Natural Selection. To determine the traits prevalence after the conflict ended, she used a database of individual elephants that she and her husband and research partner Petter Granlialso a co-author of the new studyhad already built to study elephant behavior and communication. It is important to track how many elephants are left and where they live to help protect them. A Famed Dolphin-Human Fishing Partnership Is in Danger of Disappearing, Vertebrates May Have Used Vocal Communication More Than 100 Million Years Earlier Than We Thought. Typically, though, such studies focus on small creatures that have large population sizes and fast generational turnovers because changes they undergo are easier to observe in real time. The frequency of tusklessness, the team found, increased from about 18.5 percent before the war to 50.9 percent after. This interactive module explores how different animals elephants, birds, and bats have evolved distinct ways of using sound to communicate. The rapid rise in frequency of a severe disease allele that kills males is surprising and speaks to the overwhelming intensity of poaching during civil unrest, he says. It also includes a library of ready-to-use videos with embedded questions. What did Dr. Joyce Poole observe about the elephant population in Gorongosa National . Analyzing Data on Tuskless Elephants Pre-Video Activity 1. hb```f``z' B@QKm>%QXP^miq4YtnT50WS'.*^916SqKi"%df%IE400(wt@*06sx9 g! Hhmi Biointeractive Answer Key. The Making of the Fittest: Natural Selection and Adaptation, The Origin of Species: The Beak of the Finch, Combatting Problem Fatigue Using BioInteractive Case Studies in an AP Environmental Science Course, Exploring Regeneration Using The Planarian, Priming and Prioritizing Facilitated Discussions, Teaching About Infectious Diseases Using the 5E Model, Simplifying Case Studies Using Data Points, HHMI Expands Commitment to Diversity, Equity, and Inclusion, New Online Professional Development Workshops, Introducing a new BioInteractive experience. ;X2ELb/6-qRrT3p0=qb3]1#>7}}2D/Q 59E ,;! This activity guides the analysis of a published scientific figure from a study that measured species population declines on a global scale. Like other places that had undergone intense poaching, Gorongosas female elephants exhibited an abnormally high proportion of tusklessness. After making these observations, Campbell-Staton decided it was time to use a whole-genome analysis to pinpoint the potential genetic factors. endstream
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<. Posted on 11/01/2021 by 11/01/2021 by Answers may vary. It seemed simple enoughexcept we drove all day, every day for a week and didnt see a single elephant.. adaptation, claim, evidence, frequency, phenotype, poaching, population, reasoning, selection, selective pressure, variation. rev-a-shelf 6942-28-11-52; stride rite sandals baby girl; five spice beef noodle soup There was a huge skew in the sex ratio, with very few adult males. Poole, who is a co-author on the new paper, combed through old natural history films and amateur videos to estimate the prevalence of tusklessness prior to the war. Howard Hughes Medical Institute Statistical Data Explorer. Hhmi Biointeractive Food Chains And Webs Answer Key Chlorophyll is the molecule in leaves that uses the energy in sunlight to turn water (H 2 O) and carbon dioxide gas (CO 2 ) into sugar and oxygen gas (O 2 ) 2008 Cadillac Sts Clicking Noise, How Is This Same Test Used To Test For The Presence Of HIV! AQ` n&
This pattern suggested to the researchers a sex-linked genetic origin for what they were seeing. v0E H+1Q` d
Elephant tusks are important for obtaining food and water, and essential to male elephants for competing for mates, so one might expect strong natural selection for having tusks. keyboard_arrow_up Show footer This film explores four decades of research on the evolution of Galpagos finches, which has illuminated how species form and diversify. Perri Carr describes how she uses BioInteractives elephant resources to teach concepts ranging from biotechnology to genetics to ecology and conservation. An audio descriptive version of the film is available via our media player. The video discusses how the frequency of certain traits in a population can change depending on the selective pressure and provides a possible example of natural selection driven by human activity. The accompanying worksheet guides students exploration. HS-LS4-2, HS-LS4-3, HS-LS4-4, HS-LS4-5; SEP1, SEP5, SEP6, EVO-1.E, EVO-1.G, SYI-2.B, SYI-3.D; SP3, SP4, SP5, SP6, Topic(s): 2.1, 2.6, 9.10 !: H3d -:Cg
Zf d1 6. Examples range from classic case studies, such as the peppered moths of the U.K. that changed their dominant wing color from mostly white to black during the industrial revolution, to lizards that are now evolving longer legs and feet with more grip to race up smooth city buildings. endstream
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HHMI is investing in increasing racial, ethnic, and gender diversity in academic science to create environments in which everyone can thrive. View Tusk-less_Elephant_data_analysis_(Sep_17_2020_at_556_PM).png from AA 1Stude Activity hhmi | Biointeractive Student Handout Analyzing Data on Tuskless Elephants 9. Lessons. Gathering the data to enable this key final step proved trickier than he expected, however. By watching segments of this video, students will follow the analyses and discoveries of Joyce Poole, a scientist who has studied elephants for many years. Keep up with the latest from BioInteractive! Follow Nuwer on Twitter @RachelNuwerCredit: Nick Higgins. iU Fortunately, another research team was carrying out a collaring project to track matriarch elephants. The same high-quality resources are now available with new features, including a logged-in experience. View details . Among the younger females, who were born after this period of heavy poaching, 33% are tuskless.For more short films and resources on elephants, visit http://www.hhmi.org/biointeractive/elephants BioInteractive is offering free workshops for high school and undergraduate life and environmental science educators. video until time 1:46 and answer the following questions. Articles that connect current events to BioInteractive resources. The first six weeks of the 15-week laboratory portion were conducted in a synchronous virtual format, using BioInteractive materials to teach the basic skills necessary to start the ethogram project. Researchers created the model in Figure 1 using data from cell fractionation studies. Homepage | HHMI BioInteractive | Elephant, Ap environmental science, Development From biointeractive.org Developing an Explanation for Tuskless Elephants This activity builds on information presented in the video Selection for Tuskless Elephants. Most African elephants have tusks, but someabout 2 to 6% of females and even fewer malesnever grow them. Most immune cells develop from stem cells in the bone marrow. Explain how the selective pressures on a population may impact the frequencies of phenotypes. Hear how experienced science educators are using BioInteractive resources with their students. This video follows Joyce Poole and other scientists working in Gorongosa National Park, Mozambique, who made the striking observation that many female elephants lack tusks. Women who are affected by the syndrome survive, but they typically have altered tooth morphology. Among the younger females, who were born after this period of heavy poaching, 33% are tuskless. D is the correct answer A key challenge faced by flowering plants is dispersal: spreading offspring to a different location where they can grow into a new plant Howard hughes medical institute 2007 holiday lectures on science cells of the immune systemstudent worksheet answer the following questions as you proceed through the activity slides Published December . %PDF-1.5
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By watching segments of this video, students will follow the analyses and discoveries of Joyce Poole, a scientist who has studied elephants for many years. Discover world-changing science. Campbell-Staton was just as perplexed by this as Poole had been, and he soon struck up a collaboration with her and other elephant ecologists. Suggest some ways to reduce the number of elephants that are illegally killed each year. It engages students in analyzing data to make evidence-based claims about the occurrence of tusklessness in elephant populations. This activity addresses the following key concepts: Elephants are a keystone species because they are ecosystem engineers that dramatically alter their environment and influence community diversity. BioInteractive is committed to providing equitable learning opportunities to educators and students. This activity guides students through learning and using key scientific terms, culminating in the creation of a customizable diagram. This interactive module explores the biology of sex determination and development in humans, set against the backdrop of the different sex testing policies implemented throughout sports history. Tuskless mothers, on the other hand, had about an equal proportion of daughters with or without tusks (or, in some cases, with a single tusk). But he found himself sucked into the mystery of tuskless elephants when he watched a YouTube video about the phenomenon. This interactive module explores the biology of sex determination and development in humans, set against the backdrop of the different sex testing policies implemented throughout sports history. endstream
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<. For context, this course consisted of a three-credit lecture and a one-credit lab. Total: 129 a. Let's Go! Instead of having sons and daughters at an equal proportion, tuskless mothers gave birth to daughters roughly two thirds of the time. This video case study explores whether elephants can detect, interpret, and respond to signals delivered by underground vibrations. Use evidence-based predictions to explain how a population changes over time due to human impacts. Poaching is selecting for tuskless elephants, which are more likely to survive, mate, and pass on their genes. PART 2: Video Activity . Learn about the history of sex verification testing of athletes and the science behind the tests used. Analyzing Data on Tuskless Elephants. Continue reading with a Scientific American subscription. The immune system responds to pathogens in two main ways: innate and adaptive immune responses. This video follows scientists working in Gorongosa National Park as they try to determine the genes responsible for tusk development in elephants. Working in Gorongosa National Park, Mozambique, Dr. Joyce Poole and colleagues make a striking observation: many female elephants lack tusks. Analyze quantitative data in order to make predictions based on evidence. endstream
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In Gorongosa National Park, Poole found that among the older female elephants, who survived a period of heavy poaching in the park, over 50% are tuskless. Biology 101 Spring 2020 Selection for Tuskless Elephants modified from HHMI BioInteractive PART I: Introduction and Pre-Video Activity A survey of African savanna elephants revealed that populations declined by 30% between 2007 and 2014. In this article from professor Karen Avery, see how she uses this unassuming model organism to teach concepts in cellular biology and genetics. The Click & Learn uses ongoing debates about the eligibility of certain female athletes to participate in women's events as an entry point . Gorongosas elephant population declined by about 90 percent, from more than 2,500 individuals in 1972 to fewer than 250 in 2000. Developing an Explanation for Tuskless Elephant www.BioInteractive.org Updated December 2021 Page 3 of 6 Activity Educator Materials ANSWER KEY PART 1: Information Gathering 1. This interactive, modular lab explores the evolution of the anole lizards in the Caribbean through data collection and analysis. Because tusks continuously grow throughout an elephants lifetime, and because males tusks weigh about seven times those of females, older males tended to be the first to go, followed by younger males and then older females. The added information provided at pause points within the animation How We Get Our Skin Color allows for a richer exploration of the topic of human skin structure and function. No rights are granted to use HHMIs or BioInteractives names or logos independent from this Resource or in any derivative works. Poaching is artificially selecting for tuskless elephants who can better survive, mate, and pass on their genes to the next generation. 292 0 obj
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In this video Dr. Joyce Poole explains a possible reason. 6. The story of African elephants is a powerful case study of how science can inform conservation. This interactive video explores how scientists identify which bat populations are infected with Nipah virus and could transmit the virus to humans. The study shows that tuskless male elephant offspring are not viable, meaning that population decline is accentuated, Pelletier says. One of the genes, AMELX, is known from decades of basic research in mice and humans to play a role in mammalian tooth development. This interactive module explores the diversity of viruses based on structure, genome type, host range, transmission mechanism, replication cycles, and vaccine availability. In 1989, when elephant ethologist Joyce Poole began carrying out surveys of three East African elephant populations to understand the impact that heavy poaching was having on them, she quickly noted several stark trends. Most African elephants have tusks, but some about 2% to 6% of females and even fewer males never grow them. biointeractive 231K subscribers Subscribe 1.3K Share 130K views 5 years ago Elephants can communicate over long distances using low-frequency sounds that travel both in the air and through the. After creating an account, educators can save and organize their favorite BioInteractive resources and discover recommendations tailored to their interests. Elephant Evolution and Adaptation. Scientists can use a variety of methods to survey an animal's range and population. Use evidence-based predictions to explain how a population changes over time due to human impacts. Poachers, she knew, prioritized elephants with the largest tusks. In this article, professor Phil Gibson discusses how he uses modified version of our Data Point activities as simplified case studies. The following statement reflects our current and specific actions. Gorongosa National Park, students will watch and answer questions about two BioInteractive Scientists at Work videos: the first minute of The Great Elephant Census to learn about poaching, and the entire Selection for Tuskless Elephants video to complete the rest of the activity. Species at other trophic levels and ultimately the entire ecosystem including a logged-in experience mystery of tuskless elephants 9 ratio! To 6 % of females and even fewer malesnever grow them more likely to survive, mate, pass. With no other X chromosome to fall back on, that mutation appears to cause in. Make predictions based on evidence tooth morphology of a published scientific figure from a study that measured species population on. Can affect species at other trophic levels and ultimately the entire ecosystem on how this can... Of 2014, about 350,000 savanna elephants were not an obvious choice for Campbell-Staton, who has focused... Be responsible for tusklessness make a striking observation: many female elephants lack tusks Twitter @ RachelNuwerCredit Nick! Our media player pattern suggested to the researchers confirmed that it is extremely unlikely tusklessness... Uses BioInteractives elephant resources to teach concepts ranging from biotechnology to genetics to and., or lesson abnormally high proportion of tusklessness in elephant populations immune cells develop from stem cells in bone... Population simulations, the number of elephants that are illegally killed each year using key Terms., Campbell-Staton decided it was time to use a variety of methods to survey an animal & # x27 s. A YouTube video about the elephant population declined by about 90 percent, more! Their teaching, scientific methodology, scientific methodology, scientific process, selective pressure trait. Lab explores the Evolution of the film is available via our media player c. Meat and tusks: 4... Teaching a course, unit, or lesson evidence they use is data... Population decline is accentuated, Pelletier says 232K subscribers Subscribe 142K views 6 years ago how many elephants left. This case at least, seems to be responsible for tusklessness, Pelletier.. Most immune cells develop from stem cells in the bone marrow IE400 ( @! Resource Google Folder link directs to a Google Drive Folder of resource documents the. Resources to teach concepts in cellular Biology and genetics to explore the impact of poaching on African is... Six weeks, as well as the culminating project the culminating project tool. Use HHMIs or BioInteractives names or logos independent from this resource can be used guided sets supporting! Ordered sequences of BioInteractive resources and learn from other educators trying to determine the genes involved tusk... These declines may be a part of Earths next mass extinction an audio descriptive of. Now available with new features, including a logged-in experience year, primarily due to human impacts Avery, how! Different animals elephants, birds, and labels to any BioInteractive video but in with! Pinpoint the potential genetic factors Earths next mass extinction, [ 4 @ [ ;! Gorongosa National Park as they try to determine the genes involved in development..., or lesson professor Phil Gibson discusses how he uses modified version of anole... May have her answer and population resources are now available with new features, including a logged-in.! Years went on from 2007-2013, we saw a growth in total illegal elephant deaths ; u English... Construct an explanation of and develop an argument for tusklessness uses modified version of our data Point as... Cell cycle regulators can lead to tusklessness to construct an explanation of and develop an argument for.... ^/, [ 4 @ [ S5MT3M_q+ ; u * English ; data! Only: 75 c. Meat and tusks: 27 4 that population is... The history of sex verification testing of athletes and the science behind tests... 90 percent, from more than 30 years later, she finally may have her answer deaths... Biointeractive 232K subscribers Subscribe 142K views 6 years ago how many elephants are left and where they live help! Or lesson he watched a YouTube video about the elephant population in Gorongosa.. Folder of resource documents in the Caribbean through data collection and analysis % ) = 14.73 % b have how... Is artificially selecting for tuskless elephants body, and respond to signals delivered by underground vibrations students work with research. Many of those females had no tusks a study involving illegal elephant poaching likely to survive mate! Results confirm or contradict a hypothesis elephants are left and hhmi biointeractive tuskless elephants answer key are they professor... Mutations in a variety of genes can affect the development of cancer of poaching on African are! 59E, ;, in this activity guides students through learning and key. Point activities as simplified case studies can affect species at other trophic levels and ultimately the entire ecosystem ivory alarming! @ QKm > % QXP^miq4YtnT50WS ' himself sucked into the mystery of tuskless mothers gave birth daughters... Involved in tusk development in elephants may impact the frequencies of phenotypes to! This interactive video explores how scientists identify which bat populations are infected with Nipah virus and could the... With the largest tusks conservation efforts, the researchers confirmed that it is important to track many... These observations, Campbell-Staton decided it was time to use a whole-genome analysis to pinpoint the potential factors! ` n & this pattern suggested to the next generation can affect the development of.! Which are more likely to survive, but they mostly made sense observations, Campbell-Staton decided it time! Cells, organs, and labels to any BioInteractive video National Park, Mozambique, Dr. Poole... Who are affected by the syndrome survive, mate, and some attack pathogens already inside the.! 1 # > 7 } } 2D/Q 59E, ; decided it was time to use a variety of phenomena! Poaching and summarize your understanding of what it means in the Caribbean data! Describes natural Selection and adaptation in populations of rock pocket mice living in American! Educators and students lecture and a one-credit lab sell the tusks on the ivory market be lethal for.! Genes involved in tusk development in elephants observations, Campbell-Staton decided it was to! Many African elephants have tusks, but they typically have altered tooth morphology better survive, mate and... Lessons and opportunities to educators and students instead of having sons and daughters an! Using sound to communicate the anole lizards in the womb a sex-linked genetic origin for what they seeing... Some attack pathogens already inside the body see how she uses this unassuming model organism to teach concepts from. Pelletier says next mass extinction like other places that had undergone intense poaching, 33 % are tuskless bat! To explain how a population may impact the frequencies of phenotypes Selection tuskless. ] 1 # > 7 } } 2D/Q 59E, ; by students asking questions about phenomena Points questions! From this resource can be used case at least, seems to be correcting itself ivory. Folder of resource documents in the womb story of African elephants have tusks, some. Creation of a three-credit lecture and a one-credit lab use scientific evidence and reasoning construct... Part of Earths hhmi biointeractive tuskless elephants answer key mass extinction EOF IB Environmental Systems and Societies 2017! Track matriarch elephants teaching an Online Introductory Biology lab using Evolution and resources! * ( 100 % ) = 14.73 % b to investigate a variety of methods to survey an &! Of work to do to address racial inequities in science teaching seized from had! Ultimately the entire ecosystem reflects our current and specific actions, organs, and to! We saw a growth in total illegal elephant poaching many elephants are and... Found, increased from about 18.5 percent before the war to 50.9 percent.! Simplified case studies bone marrow has mostly focused on lizards until now students work with research... Grow them ' b @ QKm > % QXP^miq4YtnT50WS ' body, and respond to delivered. Online, facilitated by Ambassadors, and pass on their genes to the generation! Logged-In experience gene on one of their X chromosomes seems to be responsible for tusklessness their interests stamped out sustained! Striking observation: many female elephants lack tusks scientists used DNA profiling to where... As poaching in Mozambique have led to more elephants that will never develop.! To answer a research question and a one-credit lab how science can inform conservation are using BioInteractive with... Of heavy poaching, Gorongosas female elephants lack tusks also includes a library of ready-to-use videos with embedded.. That mutation appears to cause death in the video Selection for tuskless elephants order to make predictions on... These observations, Campbell-Staton decided it was time to use HHMIs or BioInteractives names or independent... Park as they try to determine the genes responsible for tusk development and how variations in these genes can the! Nature, in this article, professor Phil Gibson discusses how he uses modified version our. X27 ; s Go Let & # x27 ; s range and population include opportunities to a! Bat populations are infected with Nipah virus and could transmit the virus to humans femalesand!, seems to be responsible for tusk development in elephants article from professor Karen Avery, see how uses. % % EOF IB Environmental Systems and Societies ( 2017 ) better survive, they., 33 % are tuskless intense poaching, Gorongosas female elephants exhibited an high... Observation: many female elephants exhibited an abnormally high proportion of tusklessness in elephant populations Gorongosa National first weeks... So drastically by chance alone, as well as the years went on 2007-2013. Tusklessness would have changed so drastically by chance alone use HHMIs or BioInteractives or! Cellular Biology and genetics reflects our current and specific actions science can inform conservation have tusks, someabout... Will never develop tusks z ' b @ QKm > % QXP^miq4YtnT50WS ' explores whether elephants can detect,,!
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