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How Did Fins Evolve into Legs?

How Did Fins Evolve into Legs?

How did fins evolve into legs? Researchers at CSIC-Universidad Pablo de Olavide-Junta de Andalucía, in Seville, Spain, introduced extra Hoxd13, a gene known to aid in limb growth, to the edge of an embryonic zebrafish’s fin. Presto, a leg was formed. The researchers are now investigating how changes in gene expression may have resulted in this crucial evolutionary change.

Source: ScienceDaily

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