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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:

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

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

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

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

B, A, C, humans
B, A, C, humans
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1 answer

To arrange the organisms in order of their evolutionary closeness to humans based on the percentages of shared DNA, we will rank the organisms based on their shared DNA percentage with humans.

  • Organism A: 85% of DNA shared with humans
  • Organism B: 80% of DNA shared with humans
  • Organism C: 90% of DNA shared with humans

Now, we can list them from least related to most related:

  1. Organism B (80% shared)
  2. Organism A (85% shared)
  3. Organism C (90% shared)
  4. Humans (100% shared)

So, the correct order for the cladogram from least related to most related is:

B, A, C, humans.