Biology

The correct answer is: D. Eggs with shells and hair.

1. Analyze the traits of rodents, primates, and crocodiles on the cladogram:

Bony Skeleton: Crocodiles, rodents, and primates all have a bony skeleton. This trait is present before the branching that leads to crocodiles, rodents, and primates. So it does not separate rodents and primates from crocodiles.

Vertebrae: All the organisms in the cladogram (sharks, ray - finned fish, amphibians, primates, rodents, crocodiles, and birds) are vertebrates. So this trait does not distinguish rodents and primates from crocodiles.

Click "Show Answer" to reveal the answer and analysis