Of Mice and Men

We share lots of genes with mice, probably many with cetaceans too, since they were originally mammals and all mammals share a common ancestor. Some of those genes probably direct whether the skin between the finger bones dies or not. I was just wondering what the difference was between the genes that directed the development (and disappearance) of the skin between the fingers in human beings and cetacea. It's not something I know anything about, and I haven't heard that any cetacean genomes have been sequenced yet.

 

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