Denton suggested that these data undermined the notion that fish were ancestral to frogs, which were ancestral to reptiles, which were ancestral to birds and mammals. If they were, then wouldn't the difference in cytochrome C structures be increasingly different from carp to frog, to reptile, to mammal?
Denton proposed that these findings contradicted the idea that fish were ancestral to frogs, which were ancestral to reptiles, which were ancestral to birds and mammals. If true, wouldn't the differences in cytochrome C structures be progressively greater between carp and frog, then frog and reptile, then reptile and mammal?