the foxp2 sequences of mice were most different from those of
FOXP2 The FOXP2 gene is highly conserved in mammals.[41] Human gene differs from non-human primates by the substitution of two amino acids, threonine to asparagine substitution at position 303 (T303N) and asparagine to serine substitution at position 325 (N325S).[32] In mice it differs from that of humans by three substitutions, and in zebra finch by seven amino acids.[17][42][43] One of the two amino acid difference between human and chimps also arose independently in carnivores and bats.[13][44] Similar FOXP2 proteins can be found in songbirds, fish, and reptiles such as alligators.[45][46]