What's interesting to me is that it's all marine mammals, that are from separate evolutionary lines.
Something about being a marine mammal is selecting for the loss of this protein. Because whales (closely related to ruminants), manatees (related to elephants), and seals (related to wolves, bears, and cats) all lost it, and that's too weird not to bear further investigation.
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dancing_serpent
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Date: 2018-08-11 12:40 pm (UTC)Something about being a marine mammal is selecting for the loss of this protein. Because whales (closely related to ruminants), manatees (related to elephants), and seals (related to wolves, bears, and cats) all lost it, and that's too weird not to bear further investigation.