Website resources

Guppy info:

http://en.wikipedia.org/wiki/Guppy

http://guppyfishcare.com/

Sexual selection info:

http://evolution.berkeley.edu/evolibrary/article/evo_28

http://www.nature.com/scitable/knowledge/library/sexual-selection-13255240

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Video resources: Guppies & Sexual Selection

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The Science of Human Attraction