A scientist is trying to determine the evolutionary relationships among species with very similar physical characteristics. one method to determine the relationships is by comparing amino acid sequences of proteins. why would the scientist compare the amino acid sequences of proteins common to those similar species?

Amino acid sequence is directly related to the differences in the DNA of the species.

Explanation:

Above situation is related to the evolutionary research in which scientists are in search of common characteristics between species and from those species they will examine the amino acid sequence of proteins because amino acids sequence is directly related to the sequence of DNA and DNA is the main thing among all other variables by which differences in species can be identified effectively.