Twins develop from a splitting of a single fertilized egg and share percent of their genes.

The answer in the first space provided is the dizygotic—it is because dizygotic twins were able to develop because of separate fertilize eggs that are two which will create and develop them. The answer in the second space provided is one hundred as this is a guarantee that their genes will be shared all throughout.

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands