To determine which two organisms are the most closely related based on their amino acid sequences, we can compare the sequences of each organism.
- Organism A: Val-Ser-Thr-Val
- Organism B: Leu-Ala-Leu-Ala
- Organism C: Val-Ser-Asp-Met
Comparison:
- Organism A vs. Organism B: There are no identical amino acids in the sequences.
- Organism A vs. Organism C: The first two amino acids (Val-Ser) are identical.
- Organism B vs. Organism C: There are no identical amino acids in the sequences.
Conclusion: Organisms A and C share two identical amino acids (Val and Ser), while Organism B has no similarities with either A or C. Therefore, A and C are the most closely related.
The correct response is: A & C
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