Which one of these provides evidence from development biology of a shared evolutionary history? a. the skeletal structures of a leg of a horse and flipper of a whale are very similar. b. both snakes and dogs have pelvic bones even though they are vestigial structures in the snake. c. the dna sequences of the cytochrome c genes in chimpanzees and spider monkeys are over 90% identical. d. both lobsters and frogs go through metamorphosis as a process in their life cycle.