use the following cladogram to answer the questions below.
sharks
ray - finned fish
amphibians
primates
rodents & rabbits
crocodiles
birds
hair
eggs with shells
amniotic egg
four limbs
bony skeleton
vertebrae
8. what do sharks and ray - finned fish have in common?
9. what do ray - finned fish and primates have in common?
10. what four things do primates and crocodiles have in common?
11. what two things separate primates from crocodiles?
10. what organism is most related to rodents and rabbits?
11. who is the bird’s closest relative?
12. what five traits do birds and their closest relative share?

Question

Accepted Answer

### Question 8
# Brief Explanations:
To determine what sharks and ray - finned fish have in common, we look at the cladogram. The trait that is shared by both and is the most recent common trait (the node they share) is having vertebrae.
# Answer:
They both have vertebrae.

### Question 9
# Brief Explanations:
Looking at the cladogram, we find the common traits between ray - finned fish and primates. By tracing the branches, we see that they share vertebrae, a bony skeleton.
# Answer:
They both have vertebrae and a bony skeleton.

### Question 10 (first one about primates and crocodiles)
# Brief Explanations:
From the cladogram, we identify the traits that primates and crocodiles share. We check the nodes that are common to both. They share vertebrae, a bony skeleton, four limbs, and an amniotic egg.
# Answer:
They have vertebrae, a bony skeleton, four limbs, and an amniotic egg in common.

### Question 11 (first one about separating primates and crocodiles)
# Brief Explanations:
To find what separates primates from crocodiles, we look at the traits that primates have but crocodiles do not. From the cladogram, primates have hair and do not have eggs with shells (while crocodiles have eggs with shells and no hair). So the two things are hair (primates have it, crocodiles don't) and eggs with shells (crocodiles have it, primates don't).
# Answer:
Hair (primates have it, crocodiles don't) and eggs with shells (crocodiles have it, primates don't) separate them.

### Question 10 (second one about organism related to rodents and rabbits)
# Brief Explanations:
On the cladogram, rodents and rabbits are most closely related to primates as they share the same branch (the branch with the "Hair" trait) before their own branches diverge.
# Answer:
Primates are the most related to rodents and rabbits.

### Question 11 (second one about bird's closest relative)
# Brief Explanations:
By looking at the cladogram, the bird's closest relative is the crocodile because they share the "Eggs with shells" trait and their branches are the closest among all the organisms to the bird's branch.
# Answer:
The crocodile is the bird's closest relative.

### Question 12
# Brief Explanations:
First, we know the bird's closest relative is the crocodile. Then we list the traits they share. From the cladogram, these traits are vertebrae, a bony skeleton, four limbs, an amniotic egg, and eggs with shells.
# Answer:
Birds and their closest relative (crocodile) share vertebrae, a bony skeleton, four limbs, an amniotic egg, and eggs with shells.

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Explanation:

Question 8

Answer:

Question 9