A current view of how the human and chimpanzee can share most of their nucleotide sequence yet exhibit significant phenotypic differences is that many of the most important sequence differences alter
A)structural genes.
B)the number of repeated sequences.
C)regulatory sequences and proteins.
D)environmental factors.
E)cultural factors.

Question

Quizplus · Accepted Answer

Regulatory sequences and proteins are responsible for controlling gene expression and can have a significant impact on phenotype. Differences in these sequences between humans and chimpanzees could explain many phenotypic differences despite the high nucleotide sequence similarity between the two species. Structural genes and the number of repeated sequences are less likely to be directly responsible for significant phenotypic differences. Environmental and cultural factors can also play a role in phenotype but are not related to nucleotide sequence differences.

A Current View of How the Human and Chimpanzee Can