According to this cladogram, the most recent common ancestor of the fish, amphibians, birds, and prosimians had what trait(s)?

True or False: Amphibians have amniotic eggs

Select all animals that have amniotic eggs

According to this cladogram, the most recent common ancestor between the amphibians, primates, and crocodiles had what trait?

According to this cladogram, the most recent common ancestor between the crocodiles and dinosaurs & birds had what trait?

What letter represents the most recent common ancestor of the lizard, hamster, and chimpanzee?

What trait does the salamander have that the salmon does not?

Select all animals that have vertebrae

What animal should be written at "A"?