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

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1. Write down the sequences:  
   - Organism A: $$ 	ext{Val-Ser-Thr-Val} $$  
   - Organism B: $$ 	ext{Leu-Ala-Leu-Ala} $$  
   - Organism C: $$ 	ext{Val-Ser-Asp-Met} $$

2. Compare the sequences:  
   - When comparing Organisms A and C, we notice the first two amino acids are the same:  
     - Position 1: $$ 	ext{Val} $$ in both A and C.  
     - Position 2: $$ 	ext{Ser} $$ 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 $$ 	ext{Val} $$ and $$ 	ext{Ser} $$ in the first two positions, they are the most closely related.

The answer is:  
A and C
A and C are the most closely related.

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

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