Read through the following observations.
1some snakes have pelvic bones that sometimes sprout protrusions called "pelvic spurs" which serve little purpose.
2paleontologists have found the remains of an extinct, aquatic, snake-like lizard with miniature vestigial forelimbs.
3whales and some dolphins are marine mammals with hip bones that serve no purpose.
4a dolphin was found that developed small hind flippers.
based on these observations, what generalization can you make about the evolution of these animals?
whales and snakes have been evolving to be similar to walking animals.
whales and snakes most likely evolved from snake-like marine lizards.
whales are more closely related to snakes than to other marine mammals.
whales and snakes must have evolved from four-legged animals.