Scientists Discover Link Between Fins and Hands

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 A composite image of a mouse hand and a fish fin, each labeled with the same molecular markers.
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This week, we've been chronicling the plight of the oceans in our series "Trashing the High Seas," and today we look at a new study that binds us even closer to the oceans and its inhabitants.

Researchers at the University of Chicago found a link between the genes in fish fins and the genes responsible for finger and toe formation among land animals.

Andrew Gehrke, a co-author of the study and a biologist now at Harvard University, has the details on this breakthrough.