Examine the amino acid sequences 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) B and C They are all equally related. A and C A and B

1. Write down the sequences: - Organism A: \( \text{Val-Ser-Thr-Val} \) - Organism B: \( \text{Leu-Ala-Leu-Ala} \) - Organism C: \( \text{Val-Ser-Asp-Met} \) 2. Compare the sequences: - When comparing Organisms A and C, we notice the first two amino acids are the same: - Position 1: \( \text{Val} \) in both A and C. - Position 2: \( \text{Ser} \) in both A and C. - The remaining positions differ, but the shared first two amino acids suggest a closer relationship. 3. Compare other pairs: - Organisms A and B do not share similar residues at the same positions. - Organisms B and C also do not show significant similarities. 4. Conclusion: - Since A and C share \( \text{Val} \) and \( \text{Ser} \) in the first two positions, they are the most closely related. The answer is: A and C