Have you read any good books lately? how often can i give my child motrin and tylenol â?œWe had expected to find identical changes in maybe a dozen or so genes but to see [changes in] nearly 200 is incredible," lead author Joe Parker said in a statement. "We know natural selection is a potent driver of gene sequence evolution, but identifying so many examples where it produces nearly identical results in the genetic sequences of totally unrelated animals is astonishing."
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