Question

organism is most closely related to organism a. the student has data that shows the number of amino acid differences between organism a and each of the other organisms.
study the data in the chart.
which organism does this data suggest is most closely related to organism a?

Explanation:

The fewer the differences in amino acid sequences between two organisms, the more closely related they are. Organism D has the least number of differences (1) compared to Organism A.

Answer:

D.