Question

11.4. give one example of a homologous trait and one example of a vestigial trait, and explain how such traits support the theory of common descent.
a group of five new, related species of animals is discovered with the following traits:

• species 1: eyes on top of the head; claws; long tongue; a tail
• species 2: eyes on top of the head; claws; long tongue; no tail
• species 3: eyes on top of the head; no claws; long tongue; no tail
• species 4: eyes on top of the head; claws; short tongue; no tail
• species 5: eyes on top of the head; claws; long tongue; no tail

which of the following traits would likely be found in the ancestor from which all these species evolved?
correct answer(s)
eyes on top of the head
long tongue
claws
tail

Explanation:

The trait common to most species (eyes on head, claws, long - tongue) likely came from the ancestor. Tail is not universal.

Answer:

eyes on top of the head, claws, long tongue