To determine which two organisms are the most closely related based on the provided amino acid sequences, we can compare the sequences for similarities.
- Organism A: Val-Ser-Thr-Val
- Organism B: Leu-Ala-Leu-Ala
- Organism C: Val-Ser-Asp-Met
Let’s analyze the sequences:
- Organism A and Organism C have two identical amino acids: Val and Ser.
- Organism B has different amino acids (Leu and Ala) that do not match any in Organism A or Organism C.
Based on the similarities, A and C are the most closely related because they share two out of four amino acids, while B shares no amino acids with either A or C.
So, the correct response is:
A and C.