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Population Variation

054 - Population Variation Paul Andersen explains the importance of genetic variation within a population. He begins with a discussion of the devil facial tumor that is a form of cancer transferred between Tasmanian devils. He then explains how a decrease in genetic variability nearly led to the extinction of the black-footed ferret. He finally discussed the importance of genetic variability in disease resistance. He explains how mutations in humans allow some of them to be resistant to HIV and how the allele frequency can be calculated in a population using the Hardy-Weinberg equation. Do you speak another language? Help me translate my videos: http://www.bozemanscience.com/transla... Intro Music Atribution Title: I4dsong_loop_main.wav Artist: CosmicD Link to sound: http://www.freesound.org/people/Cosmi... Creative Commons Atribution License All of the images are licensed under creative commons and public domain licensing: File: Black Death.jpg, n.d. http://commons.wikimedia.org/wiki/Fil.... "File:Black Footes Ferret Pups.jpg." Wikipedia, the Free Encyclopedia. Accessed April 9, 2014. http://en.wikipedia.org/wiki/File:Bla.... "File:Black-Footed Ferret 001.jpg." Wikipedia, the Free Encyclopedia. Accessed April 9, 2014. http://en.wikipedia.org/wiki/File:Bla.... "File:FlorentineCodex BK12 F54 Smallpox.jpg." Wikipedia, the Free Encyclopedia. Accessed April 9, 2014. https://en.wikipedia.org/wiki/File:Fl.... "File:HIV Attachment.gif." Wikipedia, the Free Encyclopedia. Accessed April 9, 2014. http://en.wikipedia.org/wiki/File:HIV.... "File:Sarcophilus Harrisii Taranna.jpg." Wikipedia, the Free Encyclopedia, March 24, 2014. http://en.wikipedia.org/w/index.php?t.... "File:Tasmanian Devil Facial Tumour Disease.png." Wikipedia, the Free Encyclopedia. Accessed April 9, 2014. http://en.wikipedia.org/wiki/File:Tas.... Mariomassone, Black_footed_ferret_whole jpg: User:PDHderivative work: Mustela Nigripes Source = [1] Transwiki Approved by: w:en:User:Dmcdevit This Image Was Copied from Wikipedia:en. The Original Description Was:, 20:20 (UTC). Black_footed_ferret_whole.jpg. http://commons.wikimedia.org/wiki/Fil.... Oys. Українська: Поширення Хвороби Пухлин Обличчя Диявола (DFTD) На Острові Тасманія, Вказані Окремі Випадки До 2001 Року Та Межа Області Поширення В 2003 І 2007 Роках., May 23, 2009. Own work. Based on a Demis image (permission) and data from the article: McCallum H (2008). "Tasmanian devil facial tumour disease: lessons for conservation biology". Trends Ecol Evol. 23 (11): 631-7. PMID 18715674. http://commons.wikimedia.org/wiki/Fil.... Singer, Ron. Black-Tailed Prairie-Dog (Cynomys Ludovicianus), January 2002. U.S. Fish & Wildlife Service. http://commons.wikimedia.org/wiki/Fil.... User:Roke. English: Estimated Number of People in the World Living with HIV/AIDS in 2008., July 2008. UNAIDS 2008 global report,. http://commons.wikimedia.org/wiki/Fil....