classification

According to this cladogram, primates are most closely related to -

• Amphibians
• Rodents and rabbits
• Crocodiles
• Birds

Which trait do only humans have, according to the cladogram?

• jaws
• mammary glands & hair
• terrestrial during all life stages
• opposable thumbs

Individuals that are well adapted to their environment will survive and produce:

• Fewer mutations
• Stronger genes
• More offspring
• Better traits

You look at two species and see very similar amino acid sequences. What does this likely tell you?

• These are the same animal.
• These animals have a common ancestor.
• These animals are not likely related.
• These animals are likely becoming one species.

According to this cladogram, sharks are MOST closely related to which organism? 

• Amphibians
• Ray finned fish
• Crocodiles
• Birds

Which is the newest trait?

• Amniotic egg

• Walking legs

• Jaws

• Hair

What trait separates sharks from ray-finned fish?

• Vertebrae
• Bony skeleton
• Four limbs
• None

This diagram shows a cladogram of six species based on amino acid similarities. Which two species are most closely related?

• I and II

• II and IV

• I and V

• V and VI

Which statement concerning the evolution of species A, B, C, D and E is supported by the diagram?

• Species B and C can be found in today's environments.

• Species A and D evolved from E.

• Species A and C can still interbreed.

• Species A, B, and E all evolved from a common ancestor and are all successful today.

Of the choices listed, which species is the oldest?

• H

• D

• C

• A