Question

3 of 153 of 15 Items







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)
Responses

A and C
A and C

They are all equally related.
They are all equally related.

B and C
B and C

A and B

Answer 1

To determine which two organisms are most closely related based on their 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

Comparing the sequences:

- Organism A and Organism C share two identical amino acids (Val and Ser).
- Organism B does not share any amino acids with either A or C.

Based on the similarities, the two organisms that are most closely related would be Organism A and Organism C, due to the presence of common amino acids in their sequences.

So the correct response is:

**A and C**