Chimpanzees and humans are very similar genetically,while being much less similar phenotypically.This is likely due to:
A)many differences in structural genes
B)a few changes in regulatory genes
C)a few changes in structural genes
D)none of the above

Question

Quizplus · Accepted Answer

Humans and chimpanzees share more than 98 percent of their DNA sequence, which suggests that they are very similar genetically. However, despite this similarity, there are many phenotypic differences between these two species. One likely explanation for this is that the differences are due to a few changes in regulatory genes. Regulatory genes control the expression of other genes, so changes in these genes can have a significant impact on an organism's phenotype. In contrast, changes in structural genes, which code for the proteins that make up an organism's body, are less likely to generate major differences in phenotype.

Chimpanzees and Humans Are Very Similar Genetically,while Being Much Less