A scientist is attempting to build a cladogram that shows the evolutionary closeness of three organisms in relation to humans. After doing DNA analysis, they determine that the organisms share the following percentages of DNA:

Question

Organism A and humans share 85% of their DNA.

Organism B and humans share 80% of their DNA.

Organism C and humans share 90% of their DNA.

Based on this information, which order should they go on the cladogram (from least related to most related)?
(1 point)
Responses

B, A, C, humans
B, A, C, humans
C, B, A, humans
C, B, A, humans
C, A, B, humans
C, A, B, humans
A, B, C, humans

Answer 1

To build the cladogram based on the percentages of DNA shared with humans, we should order the organisms from least related to most related to humans based on the percentage of shared DNA:

• Organism B shares 80% of its DNA with humans (least related).
• Organism A shares 85% of its DNA with humans (more related than B).
• Organism C shares 90% of its DNA with humans (most related).

Therefore, the order from least related to most related is:

B, A, C, humans.

So the correct response is:

B, A, C, humans.