Genetic Recombination and Gene Mapping

In this video Paul Andersen explains how the frequency of recombination between linked genes can be used to determine the relative location of genes on a chromosome. Thomas Hunt Morgan and Alfred Strutevant used the fruit fly to develop a theory of chromosomal inheritance and discover crossing over.

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Music Attribution
Title: String Theory
Artist: Herman Jolly
http://sunsetvalley.bandcamp.com/track/string-theory

All of the images are licensed under creative commons and public domain licensing:
“File:Drosophila Repleta Lateral.jpg.” Wikipedia, the Free Encyclopedia. Accessed March 13, 2014. http://en.wikipedia.org/wiki/File:Drosophila_repleta_lateral.jpg.
“File:Morgan Crossover 1.jpg.” Wikipedia, the Free Encyclopedia. Accessed March 13, 2014. http://en.wikipedia.org/wiki/File:Morgan_crossover_1.jpg.
“File:Thomas Hunt Morgan.jpg.” Wikipedia, the Free Encyclopedia. Accessed March 13, 2014. http://en.wikipedia.org/wiki/File:Thomas_Hunt_Morgan.jpg.
“FlyBase,” n.d. http://flybase.org/reports/FBgn0003975.html.
spax89. Illustration of a Tobacco Pipe, 2009. Extracted from Media:Blason de la ville de Saint-Quentin-la-Poterie (30).svg. http://commons.wikimedia.org/wiki/File:Tobacco_pipe.svg.