Cladograms

Kangaroos and opossums both incubate their immature in pouches. This means they -

• share a common ancestor
• possess vestigial organs
• have similar skeleltal structures
• belong to the same species

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

• Amphibians
• Rodents and rabbits
• Crocodiles
• Birds

According to this cladogram, birds are LEAST related to -

• Amphibians
• Sharks
• Ray Finned Fish
• Crocodiles

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

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

According to the cladogram, which organism is most distantly related to the human?

• crayfish
• rat
• perch
• frog

On the cladogram, which organism is the closest relative of the human?

• Frog
• Hare
• Caiman
• Parrot

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.

All the animals to the right of the hagfish would have the common characteristic of -

• Fur
• Claws or nails
• Lungs
• Jaws

On the cladogram, which organism is the closest relative of the parrot?

• Frog

• Hare

• Caiman

• Parrot