Gene injection leads fish embryos to grow primitive hands

12/17/2012 | New Scientist

Researchers injected zebrafish embryos with a gene that codes for a protein known to control the development of autopods -- primitive versions of hands and feet -- and found that those embryos developed autopods rather than fins. The fish already have the hoxd13 gene, but it produces small amounts of the protein; but when injected with extra copies taken from a mouse, the embryos grew autopods before dying days later.

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