The Protein Cytochrome C Contains Between 100 and 104 Amino

Multiple Choice

The protein cytochrome c contains between 100 and 104 amino acids. A comparison of cytochrome c amino acids in several species yielded the following information: 13 differences between humans and dogs, 17 differences between monkeys and chickens, 27 differences between turtles and tuna, and 31 differences between moths and chickens. Based on the data above, which two species are most closely related?

A) humans and dogs
B) monkeys and chickens
C) turtles and tuna
D) moths and chickens