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First Aired: 02/20/2008
Length: 58 minutes
Show ID: 13545
The Diversity of Development: Embryos and Evolution

First Aired: 02/20/2008

How does variation in genes generate the beautiful diversity of animal body shapes that fill the world? UCSD Biologist William McGinnis explains that all animals, whether fish, fowl, or fly, share similar architectural control genes called Homeobox genes. The discovery and study of these genes has led to an understanding of how subtle changes in Homeobox genes can lead to changes in animal form during evolution.

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