The Strength of Darwin's Theory


It explained data better than previous explanations


            Lack of perfection

            Developmental similarities

            Not all similarities the same

                        Homologous vs analogous similarities

            Sexual dimorphisms


It also makes specific, testable predictions

            All life should have some elements in common

            Species should exhibit differing degrees of similarity

            Should never see a "frog/mushroom"


We have tested the predictions from evolution for well over a century

            The pattern is clear.

            Life looks as if all species are related