<P> The FOXP2 gene is highly conserved in mammals . 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 ) . In mice it differs from that of humans by three substitutions , and in zebra finch by seven amino acids . One of the two amino acid difference between human and chimps also arose independently in carnivores and bats . Similar FOXP2 proteins can be found in songbirds , fish , and reptiles such as alligators . </P>
<P> The FOXP2 gene is highly conserved in mammals . 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 ) . In mice it differs from that of humans by three substitutions , and in zebra finch by seven amino acids . One of the two amino acid difference between human and chimps also arose independently in carnivores and bats . Similar FOXP2 proteins can be found in songbirds , fish , and reptiles such as alligators . </P>
the foxp2 sequences of mice were most different from those of
the foxp2 sequences of mice were most different from those of
humans
humans