Description Complete all the activities in the attached lab instruction packet: SCIN 130 Lab 8: CSI ...
Description Complete all the activities in the attached lab instruction packet: SCIN 130 Lab 8: CSI Wildlife, Case 2. Work through the instruction packet step by step. Record your results directly in the worksheet as you progress through the questions. In a few sentences answer: What was the purpose of this lab? 1 attachments Slide 1 of 1 attachment_1 attachment_1 UNFORMATTED ATTACHMENT PREVIEW SCIN130 Lab 8: CSI Wildlife, Case 2 SCIN 130 Lab 8: CSI Wildlife, Case 2 General Instructions Be sure to read the general instructions from the Lessons portion of the class prior to completing this packet. Remember, you are to upload this packet with your quiz for the week! Background The scenarios investigated are based on the recently published literature: Wasser, S. K., Brown, L., Mailand, C., Mondol, S., Clark, W., Laurie, C., & Weir, B. S. (2015). Genetic assignment of large seizures of elephant ivory reveals Africa’s major poaching hotspots. Science, 349(6243), 84–87. The underlying data are available on the Dryad Digital Repository: http://dx.doi.org/10.5061/dryad.435p4. Remember, DNA is made up of nucleotides and an allele is an alternative form of a gene which may be from mutation, but is found on the same place in a chromosome in individuals and functions similarly. If you are unfamiliar with these terms, make sure to review them in your book prior to completing the lab. V1 04.2018 Felicetti Page 1 of 7 SCIN130 Lab 8: CSI Wildlife, Case 2 Specific Lab Instructions Your Name: Date: Go to: http://media.hhmi.org/biointeractive/click/elephants/dna/index.html And Click on Case Two Part 1: Case Two 1. Watch the crime scene video and read the Case Two introduction on the first slide. V1 04.2018 Felicetti Page 2 of 7 SCIN130 Lab 8: CSI Wildlife, Case 2 a. In Case One, you were looking for a match with an individual elephant. How does Case Two differ from Case One? 2. Click on Building a Reference Map. a. Watch the short video. Elephant populations differ from one another. These differences are due to geographic distance and the length of time since their ancestors separated from one another. Explain how this relationship affects their relatedness. V1 04.2018 Felicetti Page 3 of 7 SCIN130 Lab 8: CSI Wildlife, Case 2 3. Click on Technique in the Building a Reference Map section. a. How does this gel differ from the gels you studied in Case One? 4. Click on the Application section. a. Study the gel. Why does the ivory sample contain only two bands while the other lanes (samples A and B) have multiple bands? V1 04.2018 Felicetti Page 4 of 7 SCIN130 Lab 8: CSI Wildlife, Case 2 b. If an ivory sample has two alleles that are also found in a population sample, does that tell you with certainty that the ivory sample came from that population? Explain your answer. 5. Click on the Review Section. a. If the scientist had collected 20 dung samples, would you expect more bands, fewer bands, or the same number of bands on the gel? Explain your answer. V1 04.2018 Felicetti Page 5 of 7 SCIN130 Lab 8: CSI Wildlife, Case 2 6. Proceed to the Finding a Location section. a. Forest elephants and savanna elephants diverged over 2.5 million years ago, so some researchers think they should be classified as different species. Knowing this information, which genetic profiles would you predict would be more similar to one another: those of a forest elephant and a savanna elephant that are geographically close to one another, or those of two forest elephants that live far apart from one another? Explain your reasoning. b. On the Eliminating North, East, or South page, which population did you eliminate? Which marker(s) allowed you to make this choice? c. On the next elimination, which population did you choose? Which marker(s) helped you make this choice? d. By analyzing many more markers and all the populations, Dr. Wasser linked these seized ivory tusks to which country? V1 04.2018 Felicetti Page 6 of 7 SCIN130 Lab 8: CSI Wildlife, Case 2 Part 2: Ivory Trade 1. Watch the video on the Stopping Illegal Poaching slide. a. Name two reasons elephant populations are threatened. V1 04.2018 Felicetti Page 7 of 7 SCIN130 Lab 8: CSI Wildlife, Case 2 b. In summary, elephants are a keystone species. Based on your knowledge from this lab (Case 1 and Case 2), explain in your own words why it is important to the ecology and ecosystems of Africa to save the elephant populations. Adapted from: Click and Learn “CSI Wildlife” (2016). CSI Wildlife Explorer Worksheet. HHMI Biointeractive Teaching Materials. V1 04.2018 Felicetti Page 8 of 7 Purchase answer to see full attachment Tags: DNA hotspot CSI Wildlife elephant ivory Elephant populations User generated content is uploaded by users for the purposes of learning and should be used following Studypool's honor code & terms of service.
