re: Dogs

I think the Nova program attributed the multiple colors "available" in domestic dogs to testosterone levels. Domestic dogs have lower testosterone levels than wolves, which allows pre-existing color variations to be expressed. (The high testosterone levels in wild wolves has a strong influence on the production of dark pigment.) The "new" colors in dogs occur too quickly for them to have arisen through mutations since domestication.
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When fascism comes to America, it will be wrapped in the flag and carrying the cross."
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