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Genetic Drift

003 - Genetic Drift Paul Andersen describes genetic drift as a mechanism for evolutionary change. A population genetics simulator is used to show the importance of large population size in neutralizing random change. The near extinction of the northern elephant is used as an example of the bottleneck effect. The high incidence of total colorblindness due to a typhoon that hit the small island of Pingelap is also included. Do you speak another language? Help me translate my videos: http://www.bozemanscience.com/transla... All of the images are licensed under creative commons and public domain licensing: Agency, U. S. Central Intelligence. English: Map of the Federated States of Micronesia., 1999. Federated States of Micronesia (Political) 1999 from Perry-Castañeda Library Map Collection: Federated States of Micronesia Maps. http://commons.wikimedia.org/wiki/Fil.... Center, Astronaut photograph ISS008-E.-19646 was taken March 7, 2004, with a Kodak DCS760 digital camera equipped with an 50-mm lens, and is provided by the Earth Observations Laboratory, Johnson Space. English: Before the Year 2004, Only Two Tropical Cyclones Had Ever Been Noted in the South Atlantic Basin, and No Hurricane. However, a Circulation Center Well Off the Coast of Southern Brazil Developed Tropical Cyclone Characteristics and Continued to Intensify as It Moved Westward. The System Developed an Eye and Apparently Reached Hurricane Strength on Friday, March 26, before Eventually Making Landfall Late on Saturday, March 27, 2004., March 26, 2004. NASA. http://commons.wikimedia.org/wiki/Fil.... "File:Example-of-adaptive-radation.svg." Simple English Wikipedia, the Free Encyclopedia. Accessed November 1, 2013. http://simple.wikipedia.org/wiki/File.... "File:Founder Effect with Drift.jpg." Wikipedia, the Free Encyclopedia. Accessed November 1, 2013. http://en.wikipedia.org/wiki/File:Fou.... "File:Mirounga Angustirostris Distribution.png." Wikipedia, the Free Encyclopedia. Accessed November 1, 2013. http://en.wikipedia.org/wiki/File:Mir.... "File:Northern Elephant Seal, San Simeon2.jpg." Wikipedia, the Free Encyclopedia. Accessed November 1, 2013. http://en.wikipedia.org/wiki/File:Nor.... "File:Random Genetic Drift Chart.png." Wikipedia, the Free Encyclopedia. Accessed November 1, 2013. http://en.wikipedia.org/wiki/File:Ran.... "File:Random Sampling Genetic Drift.svg." Wikipedia, the Free Encyclopedia. Accessed November 1, 2013. http://en.wikipedia.org/wiki/File:Ran.... "File:RGB 24bits Palette Sample Image.jpg." Wikipedia, the Free Encyclopedia. Accessed November 1, 2013. http://en.wikipedia.org/wiki/File:RGB.... "File:Southern Elephant Seal Area.png." Wikipedia, the Free Encyclopedia. Accessed November 1, 2013. http://en.wikipedia.org/wiki/File:Sou.... Smurrayinchester. A Satellite Photo of the Atoll of Pingelap, Federated States of Micronesia, [object HTMLTableCellElement]. Own work. http://commons.wikimedia.org/wiki/Fil.... Intro Music Atribution Title: I4dsong_loop_main.wav Artist: CosmicD Link to sound: http://www.freesound.org/people/Cosmi... Creative Commons Atribution License