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. This data-driven activity accompanies the video Selection for Tuskless Elephants. 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. 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. Researchers have pinpointed how years of civil war and poaching in Mozambique have led to more elephants that will never develop tusks. Let's Go! ;X2ELb/6-qRrT3p0=qb3]1#>7}}2D/Q 59E ,;! adaptation, claim, evidence, frequency, phenotype, poaching, population, reasoning, selection, selective pressure, variation. Its something I had puzzled over for so long, says Poole, co-founder and scientific director of ElephantVoices, a nonprofit science and conservation organization. Meat Only: 19 b. Tusks Only: 75 c. Meat and Tusks: 27 4. The story of African elephants is a powerful case study of how science can inform conservation. Keep up with the latest from BioInteractive! video until time 1:46 and answer the following questions. Watch the Selection for Tuskless Elephants video until time 1:46 and answer the following questions. Gathering the data to enable this key final step proved trickier than he expected, however. Discover implementation ideas, lesson sequences, resource modifications, quick tips, and more in this collection of videos and in-depth articles. It seemed simple enoughexcept we drove all day, every day for a week and didnt see a single elephant.. Genetics Evolution Scientific Skills & Literacy Scientists at Work High School General High School AP/IB College This activity guides the analysis of a published scientific figure from a study that measured species population declines on a global scale. But the proportion of tuskless elephants has increased in some populations. There was a huge skew in the sex ratio, with very few adult males. 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. 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. In this video Dr. Joyce Poole explains a possible reason. In females, mutations in a key gene on one of their X chromosomes seems to be responsible for tusklessness. The Genetics of Tusklessness in Elephants | HHMI BioInteractive Video biointeractive 2 years ago The Day the Mesozoic Died: The Asteroid That Killed the Dinosaurs HHMI BioInteractive. This interactive module explores how different animals elephants, birds, and bats have evolved distinct ways of using sound to communicate. Answers Biointeractive Hhmi - Effebi.biella.it. Perri Carr describes how she uses BioInteractives elephant resources to teach concepts ranging from biotechnology to genetics to ecology and conservation. 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 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. ea`|wC"bSfoxjtZ&T2(i+q,|:m!J@ dP6H EEH6~SlL.3a5, v0E H+1Q` d This activity explores images of a coral bleaching event, which serve as phenomena for learning about marine ecosystems, human impacts, and climate change. 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. 6. 6. Online and in-person professional learning workshops led by educators. This interactive module explores the diversity of viruses based on structure, genome type, host range, transmission mechanism, replication cycles, and vaccine availability. 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. 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. Poaching is selecting for tuskless elephants, which are more likely to survive, mate, and pass on their genes. 2. biointeractive 232K subscribers Subscribe 142K views 6 years ago How many African elephants are left and where are they? Analyze quantitative data in order to make predictions based on evidence. 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. 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. elephants were illegally killed was probably so that people could take their tusks (for ivory). Poaching brings evolutionary pressure for tusklessness. 255 0 obj <> endobj This interactive video explores how scientists identify which bat populations are infected with Nipah virus and could transmit the virus to humans. Howard Hughes Medical Institute Statistical Data Explorer. Elephant tusks are important for obtaining food and water, and essential to male elephants for competing for mates, so there is a strong natural selection for having tusks. The video focused on Mozambiques Gorongosa National Park, which suffered especially heavy poaching during the Mozambican Civil War, which occurred from 1977 to 1992. This activity guides students through learning and using key scientific terms, culminating in the creation of a customizable diagram. Learning Objectives & Practices: ERT-2.A, ERT-2.H, EIN-4.C, SP5, SP6, ELA.RST.9-12.7, ELA.WHST.9-12.1 293 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 After making these observations, Campbell-Staton decided it was time to use a whole-genome analysis to pinpoint the potential genetic factors. Knowledge awaits. Poachers, she knew, prioritized elephants with the largest tusks. Thanks for reading Scientific American. Most of the elephants killed naturally did have tusks. In this article, professor Phil Gibson discusses how he uses modified version of our Data Point activities as simplified case studies. Only Meat: 19/129 * (100%) = 14.73% b. 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. Students use scientific evidence and reasoning to construct an explanation of and develop an argument for tusklessness in elephant populations. As of 2014, about 350,000 savanna elephants were living in Africa. 318 0 obj <>stream 316 0 obj <>stream 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. Describe how biological sex and gender differ from each other. %%EOF (The first six weeks, as well as the culminating project . 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 . The more killing there was, the more tuskless females you got. a. IB Environmental Systems and Societies (2017). 3. a. 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. eaht``wC(#U]}I)C Some prevent pathogens from entering the body, and some attack pathogens already inside the body. The resource is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International license. Explore the methods scientists use to survey elephants. 2023 Scientific American, a Division of Springer Nature America, Inc. 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. 11{TO8+J1FOf%E%12Xbtb?S`8,A 7 \K(Dc6@ UJ Learn about the history of sex verification testing of athletes and the science behind the tests used. Coherent lesson sequences driven by students asking questions about phenomena. Description. a. Use evidence-based predictions to explain how a population changes over time due to human impacts. %PDF-1.6 % Explain how the selective pressures on a population may impact the frequencies of phenotypes. It engages students in analyzing data to make evidence-based claims about the occurrence of tusklessness in elephant populations. This pattern suggested to the researchers a sex-linked genetic origin for what they were seeing. 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. |U#62RF>^/,[4@[S5MT3M_q+; u* PART 2: Video Activity . This has left a notable gap in the literature that the new paper helps to fill. 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. Follow Nuwer on Twitter @RachelNuwerCredit: Nick Higgins. Most African . %PDF-1.6 % endstream endobj startxref hb```f``z' B@QKm>%QXP^miq4YtnT50WS'.*^916SqKi"%df%IE400(wt@*06sx9 g! %%EOF hbbd```b``"WHg -,^ II. This interactive module explores examples of how changes in one species can affect species at other trophic levels and ultimately the entire ecosystem. More than 30 years later, she finally may have her answer. 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