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 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 416 0 obj <. Meat Only: 19 b. Tusks Only: 75 c. Meat and Tusks: 27 4. 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. 452 0 obj <>/Filter/FlateDecode/ID[<236583C912FAC64F88BAF3D554E36451>]/Index[415 68]/Info 414 0 R/Length 157/Prev 328511/Root 416 0 R/Size 483/Type/XRef/W[1 3 1]>>stream 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. 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. 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. This interactive video explores how scientists identify which bat populations are infected with Nipah virus and could transmit the virus to humans. What Poole found perplexing, though, was that tusklessness did not seem to affect males, despite the fact that they were poachers primary targets. This activity builds on information presented in the video Selection for Tuskless Elephants. +A,2k]lJ^G@R`Y0~8!CNC!MM5V_.0mLt(P1Gh9 k1]8Ay0 Ik@ +Xndi) g[! ea`|wC"bSfoxjtZ&T2(i+q,|:m!J@ dP6H EEH6~SlL.3a5, This video case study explores whether elephants can detect, interpret, and respond to signals delivered by underground vibrations. video until time 1:46 and answer the following questions. Their current rate of decline is 8% per year, primarily due to illegal killing called poaching. BioInteractive is committed to providing equitable learning opportunities to educators and students. The resource is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International license. 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. Description 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. 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. HS-LS1.A, HS-LS1.B, HS-LS3.B, HS-LS4.ASEP6, SEP8, IST-1.P, IST-1.J, IST-2.E, IST-4.A; SP1, SP2, SP4, SP6, IB Environmental Systems and Societies (2017), Teaching an Online Introductory Biology Lab Using Cellular and Molecular Biology Resources, Desktop App - macOS 10.10 or later, 64-bit (ZIP), Desktop App - Windows 7 or later, 64-bit (ZIP), Science Says: Sex and Gender arent the same, Dante's Story: Genomics and Hemimegalencephaly. Let's Go! 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. Poaching brings evolutionary pressure for tusklessness. 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. Elephant Evolution and Adaptation. It also includes a library of ready-to-use videos with embedded questions. %PDF-1.6 % This activity guides students through learning and using key scientific terms, culminating in the creation of a customizable diagram. 7. This video follows scientists working in Gorongosa National Park as they try to determine the genes responsible for tusk development in elephants. Analyzing Data on Tuskless Elephants Pre-Video Activity 1. 11{TO8+J1FOf%E%12Xbtb?S`8,A 7 \K(Dc6@ UJ Most immune cells develop from stem cells in the bone marrow. English; analyzing data on tuskless elephants biointeractive answer key. Using Pooles database, they further confirmed that, with a single exception, female elephants with two tusks had never been observed to have a tuskless baby. 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. 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. Articles that connect current events to BioInteractive resources. Anatomy & Physiology Scientific Skills & Literacy Click & Learn High School General High School AP/IB College Selection for Tuskless Elephants Fortunately, another research team was carrying out a collaring project to track matriarch elephants. keyboard_arrow_up Show footer But he found himself sucked into the mystery of tuskless elephants when he watched a YouTube video about the phenomenon. 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 2023 Scientific American, a Division of Springer Nature America, Inc. Some prevent pathogens from entering the body, and some attack pathogens already inside the body. Instead of having sons and daughters at an equal proportion, tuskless mothers gave birth to daughters roughly two thirds of the time. 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. View details . hbbd```b``"WH&. lz`f1,f u d Vi 2D7e@l( XDrG;".|`10H-v9Pl=0 u It engages students in analyzing data to make evidence-based claims about the occurrence of tusklessness in elephant populations. Ordered sequences of BioInteractive resources for teaching a course, unit, or lesson. 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. Provide evidence-based reasoning that uses available data to support a scientific claim. Description. Among the younger females, who were born after this period of heavy poaching, 33% are tuskless. This pattern suggested to the researchers a sex-linked genetic origin for what they were seeing. Data Points are useful resources that use figures from the primary literature and guided sets of supporting questions. Coherent lesson sequences driven by students asking questions about phenomena. Explain how the selective pressures on a population may impact the frequencies of phenotypes. endstream endobj startxref 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. Resume watching the video until Please see the Terms of Use for information on how this resource can be used. 2 Genetics Evolution Scientific Skills & Literacy Scientists at Work High School General High School AP/IB College Use evidence-based predictions to explain how a population changes over time due to human impacts. 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. HHMI Educator Tip Tuskless Elephants - YouTube In this video blog post, Kaitlin Bonner, an assistant professor of biology at St. John Fisher College in Rochester, NY, explains how she uses. Determine whether scientific results confirm or contradict a hypothesis. 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. After making these observations, Campbell-Staton decided it was time to use a whole-genome analysis to pinpoint the potential genetic factors. There was a huge skew in the sex ratio, with very few adult males. This interactive module explores how different animals elephants, birds, and bats have evolved distinct ways of using sound to communicate. This video follows Joyce Poole and other scientists working in Gorongosa National Park, Mozambique, who made the observation that many female elephants lack tusks. Analyze quantitative data in order to make predictions based on evidence. Please see the Terms of Use for information on how this resource can be used. eaht``wC(#U]}I)C Learning Objectives & Practices: ERT-2.A, ERT-2.H, EIN-4.C, SP5, SP6, ELA.RST.9-12.7, ELA.WHST.9-12.1 No rights are granted to use HHMIs or BioInteractives names or logos independent from this Resource or in any derivative works. Gorongosas elephant population declined by about 90 percent, from more than 2,500 individuals in 1972 to fewer than 250 in 2000. These declines may be a part of Earths next mass extinction. video until time 1:46 and answer the following questions. Africa, adaptation, Gorongosa, microevolution, scientific methodology, scientific process, selective pressure, trait. Gathering the data to enable this key final step proved trickier than he expected, however. Thanks for reading Scientific American. 292 0 obj <>/Filter/FlateDecode/ID[<035587B7358627438EA91049877A1170>]/Index[255 64]/Info 254 0 R/Length 155/Prev 375654/Root 256 0 R/Size 319/Type/XRef/W[1 3 1]>>stream An audio descriptive version of the film is available via our media player. 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. This interactive, modular lab explores the evolution of the anole lizards in the Caribbean through data collection and analysis. Answers may vary. hhmi biointeractive tuskless elephants answer key About; Location; Menu; FAQ; Contacts 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. Elephants with large tusks are targeted by poachers who sell the tusks on the ivory market. chromosome, differences in sex development (DSD), estrogen, Olympics, ovary, primary/secondary sex characteristic, sex determining region Y (SRY), testes, testosterone, X inactivation. Discover tools to help plan lessons and opportunities to support professional learning. 482 0 obj <>stream This activity guides the analysis of a published scientific figure from a study that measured species population declines on a global scale. Scientists . 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. As of 2014, about 350,000 savanna elephants were living in Africa. Hear how educators are using BioInteractive content in their teaching. Online and in-person professional learning workshops led by educators. 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. 255 0 obj <> endobj This web tool provides a quick and easy way of visualizing and analyzing data without advanced technological requirements. Pooles observationswhich were used a few months later to support a ban on international ivory tradewere alarming, but they mostly made sense. 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. Knowledge awaits. a. 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. Watch the . The Resource Google Folder link directs to a Google Drive folder of resource documents in the Google Docs format. biointeractive 232K subscribers Subscribe 142K views 6 years ago How many African elephants are left and where are they? Suggest some ways to reduce the number of elephants that are illegally killed each year. 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. 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. The same high-quality resources are now available with new features, including a logged-in experience. 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 The immune system responds to pathogens in two main ways: innate and adaptive immune responses. Why Do Some People with the Sickle Cell Genotype Not Have Symptoms? %%EOF The following statement reflects our current and specific actions. Many families lacked older femalesand many of those females had no tusks. 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