The cytochrome c in both horses and pigeons differs from the human protein at 12 locations. Based on this data, you might infer that horses and pigeons are closely related. What could you do to support or refute this hypothesis?

In order to support or refute this inference we need to first of identify the 12 locations where they differ from humans and what Amino acids are different at each location if the Locations are same and the amino acids that differ are also same only then can we assume that a pigeon and a horse are closely related, otherwise we refute the hypothesis.