Consider the following amino acid sequence for three different species, A, B, and C. Each number is a different amino acid. The letter in each cell depicts the nitrogenous base that is associated with each amino acid. Which two species are most closely related based on this part of the genome?
A) Species A and C are most closely related.
B) Species A and B are most closely related.
C) Species B and C are most closely related.
D) All three species are equally related.

Question

Consider the following amino acid sequence for three different species, A, B, and C. Each number is a different amino acid. The letter in each cell depicts the nitrogenous base that is associated with each amino acid. Which two species are most closely related based on this part of the genome? 
A) Species A and C are most closely related. 
B) Species A and B are most closely related. 
C) Species B and C are most closely related. 
D) All three species are equally related.

Quizplus · Accepted Answer

Species A and C have a higher level of similarity in their amino acid sequence, as they both have the base "d" associated with amino acid number 9 and the base "c" associated with amino acid number 12. Species B, on the other hand, has a different base in these positions, indicating a more distant relationship. Therefore, A and C are most likely to be most closely related.

Consider the Following Amino Acid Sequence for Three Different Species