Question: Which one of the following is an example of a homology that is shared by vertebrates, as discussed in lecture? Need Assignment Help? Group of answer choices The human tailbone is a leftover vestigial structure that is shared with other vertebrates, such as primates, mammals and reptiles, that also have tails, showing our remote ancestry. The wings of bats and birds that allow them to exploit an aerial environment, showing their long ancestral relationship. The brains of all vertebrates share a similar structure, including the forebrain, midbrain, and hindbrain. This organization is inherited from a common ancestor and is modified in different species for various functions. All vertebrates have a heart that pumps blood throughout the body, and the heart typically shares a similar structure with a multi-chambered design (two-chambered in fish, three-chambered in amphibians, and four-chambered in mammals and birds). This is the result of having originated from a shared ancestor that first developed a chambered heart in the far evolutionary past. A five-finger forelimb, with articulating radius and ulna, seen in most vertebrates from bats to whales, to rodents and humans, despite their living in vastly different habitats.