Examine the amino acid sequence from three organisms (A, B, and C). Which two organisms are the most closely related?

Question

Examine the amino acid sequence from three organisms (A, B, and C). Which two organisms are the most closely related?

Organism A: Val-Ser-Thr-Val

Organism B: Leu-Ala-Leu-Ala

Organism C: Val-Ser-Asp-Met

(1 point)

a. B and C

b. They are all equally related.

c. A and B

d. A and C

Answer 1

Organism A and Organism C are the most closely related as they both share the amino acid Val and Ser in their sequences. Organism B is more distantly related as its sequence does not share any amino acids with either Organism A or C. Therefore, the answer is d. A and C.