Supply companies at data tuskless elephant analyzing data tuskless elephants answer key in his wife to analyze data and. Using those samples, they identified candidate regions in the genome that, when mutated, seemed to explain tusklessness and its apparent male lethality. adaptation, claim, evidence, frequency, phenotype, poaching, population, reasoning, selection, selective pressure, variation. Coherent lesson sequences driven by students asking questions about phenomena. 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. Scientists are trying to determine the genes involved in tusk development and how variations in these genes can lead to tusklessness. In . chromosome, differences in sex development (DSD), estrogen, Olympics, ovary, primary/secondary sex characteristic, sex determining region Y (SRY), testes, testosterone, X inactivation. Keep up with the latest from BioInteractive! The Genetics of Tusklessness in Elephants This video follows scientists working in Gorongosa National Park as they try to determine the genes responsible for tusk development in elephants. 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. The frequency of tusklessness, the team found, increased from about 18.5 percent before the war to 50.9 percent after. Only Meat: 19/129 * (100%) = 14.73% b. 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. endstream endobj startxref The Resource Google Folder link directs to a Google Drive folder of resource documents in the Google Docs format. Key Concepts. 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. Provide evidence-based reasoning that uses available data to support a scientific claim. Determine whether scientific results confirm or contradict a hypothesis. But why werent there any tuskless males?. In this article, professor Phil Gibson discusses how he uses modified version of our Data Point activities as simplified case studies. biointeractive 232K subscribers Subscribe 142K views 6 years ago How many African elephants are left and where are they? After making these observations, Campbell-Staton decided it was time to use a whole-genome analysis to pinpoint the potential genetic factors. %PDF-1.6 % |U#62RF>^/,[4@[S5MT3M_q+; u* %%EOF 293 0 obj <>/Filter/FlateDecode/ID[<9453723FF87E8A44A337DAA0866B88AA><438003D2AD6765408BCD5AC475C7220B>]/Index[254 63]/Info 253 0 R/Length 160/Prev 292343/Root 255 0 R/Size 317/Type/XRef/W[1 3 1]>>stream It engages students in analyzing data to make evidence-based claims about the occurrence of tusklessness in elephant populations. 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. The immune system responds to pathogens in two main ways: innate and adaptive immune responses. 6. 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. BioInteractive is offering free workshops for high school and undergraduate life and environmental science educators. 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. Elephants with large tusks are targeted by poachers who sell the tusks on the ivory market. Elephants with large tusks are targeted by poachers, who sell the tusks on the ivory market. In this article from professor Karen Avery, see how she uses this unassuming model organism to teach concepts in cellular biology and genetics. Poaching is selecting for tuskless elephants, which are more likely to survive, mate, and pass on their genes. 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. a. Follow Nuwer on Twitter @RachelNuwerCredit: Nick Higgins. Elephants were not an obvious choice for Campbell-Staton, who has mostly focused on lizards until now. Africa, adaptation, Gorongosa, microevolution, scientific methodology, scientific process, selective pressure, trait. Poaching brings evolutionary pressure for tusklessness. 316 0 obj <>stream Learning Objectives & Practices: ERT-2.A, ERT-2.H, EIN-4.C, SP5, SP6, ELA.RST.9-12.7, ELA.WHST.9-12.1 But he found himself sucked into the mystery of tuskless elephants when he watched a YouTube video about the phenomenon. ea`|wC"bSfoxjtZ&T2(i+q,|:m!J@ dP6H EEH6~SlL.3a5, Why Do Some People with the Sickle Cell Genotype Not Have Symptoms? Propose a claim supported by scientific evidence to answer a research question. 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. There was a huge skew in the sex ratio, with very few adult males. pe*X|Xem&5*d X;d3^"kNIc rH+d ``s2AJn#*d9X;DAge`0?k G Its something I had puzzled over for so long, says Poole, co-founder and scientific director of ElephantVoices, a nonprofit science and conservation organization. Watch the . 3. a. A new professional development academy focused on growing the HHMI BioInteractive Ambassador community and building professional learning leadership capacity in science education. 11{TO8+J1FOf%E%12Xbtb?S`8,A 7 \K(Dc6@ UJ This activity guides the analysis of a published scientific figure from a study involving illegal elephant poaching. 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. %PDF-1.6 % Describe how mutations in a variety of genes can affect the development of internal and external sex characteristics. Hear how educators are using BioInteractive content in their teaching. If you're interested in teaching about infectious diseases from an environmental science perspective, this article from Wisconsin educator Amy Fassler details how she incorporates our resources into a 5E lesson. Poaching is artificially selecting for tuskless elephants who can better survive, mate, and pass on their genes to the next generation. 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. The story of African elephants is a powerful case study of how science can inform conservation. 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? (The first six weeks, as well as the culminating project . eaht``wC(#U]}I)C a. 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. 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. a. 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. ;X2ELb/6-qRrT3p0=qb3]1#>7}}2D/Q 59E ,;! 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. Let's Go! In this video, biologist Shane Campbell-Staton walks through the steps of collecting DNA samples from elephants in Gorongosa National Park and how he plans to analyze their DNA sequences.For more information and related materials, visit HHMI BioInteractive:https://www.biointeractive.org/classroom-resources/genetics-tusklessness-elephants 7. 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 biology of sex determination and development in humans, set against the backdrop of the different sex testing policies implemented throughout sports history. 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. In females, mutations in a key gene on one of their X chromosomes seems to be responsible for tusklessness. Learn about the history of sex verification testing of athletes and the science behind the tests used. Use evidence-based predictions to explain how a population changes over time due to human impacts. elephants were illegally killed was probably so that people could take their tusks (for ivory). rev-a-shelf 6942-28-11-52; stride rite sandals baby girl; five spice beef noodle soup 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! 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 . Most African elephants have tusks, but some never grow them especially in places that have a history of poaching, like Gorongosa National Park. This video follows scientists working in Gorongosa National Park as they try to determine the genes responsible for tusk development in elephants. This video case study explores whether elephants can detect, interpret, and respond to signals delivered by underground vibrations. Scientific Explanation of Evolution by Natural Selection. Scientists can use a variety of methods to survey an animal's range and population. 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. Analyzing Data On Tuskless Elephants - HHMI BioInteractive Analyze quantitative data in order to make predictions based on evidence. II. In population simulations, the researchers confirmed that it is extremely unlikely that tusklessness would have changed so drastically by chance alone. IB Environmental Systems and Societies (2017). The human immune system is made up of many cells, organs, and tissues. 0 Please see the Terms of Use for information on how this resource can be used. Perri Carr describes how she uses BioInteractives elephant resources to teach concepts ranging from biotechnology to genetics to ecology and conservation. The accompanying worksheet guides students exploration. This tool can be used to add pause points, questions, and labels to any BioInteractive video. AQ` n& hbbd```b``"wH&NQ fg`5jz XX$^feN3)R@1y"A9m v \`@=`6/Af Zl "30 0 r Introduction The same high-quality resources are now available with new features, including a logged-in experience. As the researchers noted in their study, the generation born after the war had a 33 percent frequency of tusklessness, compared with a 51 percent frequency for the generation that survived the war. View details . It seemed simple enoughexcept we drove all day, every day for a week and didnt see a single elephant.. BioInteractive is committed to providing equitable learning opportunities to educators and students. 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. Discover implementation ideas, lesson sequences, resource modifications, quick tips, and more in this collection of videos and in-depth articles. 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. 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