The arm or forelimb of humans, horses, goats, and mice all exhibit the same three bone structures: humerus, ulna, and radius. which statement best explains this common skeletal structure?
a)the limb bones are similar across these species because they share a common ancestor.
b)the limb bones are the same across these species because all of them move in a similar way.
c)the limbs are similar because of the recurring patterns of genetic mutation that are common in the animal kingdom.
d)the limbs are structurally similar due to convergent evolution--different organisms evolving to become structurally similar.