Vestigial traits serve as a strong test of Darwin's theory of evolution by common ancestry.Based on the figure above,in which limbless organisms would you expect to find vestigial limbs?
A)Jellyfish
B)Fish
C)Annelid worms
D)Snakes

Question

Vestigial traits serve as a strong test of Darwin's theory of evolution by common ancestry.Based on the figure above,in which limbless organisms would you expect to find vestigial limbs?
A)Jellyfish 
B)Fish 
C)Annelid worms 
D)Snakes

Quizplus · Accepted Answer

Snakes are the only limbless organisms listed that are descendants of a group of limbed organisms (lizards). Therefore, if Darwin's theory is correct, we would expect snakes to have vestigial limbs that were present in their lizard ancestors.

Vestigial Traits Serve as a Strong Test of Darwin's Theory