Which of the following is true of the evolution of the human brain?
A) The human brain is smaller than that of any other primate.
B) Comparisons of brain size within the primate family require an adjustment for body size.
C) The size of primate brains has shrunk over the course of evolutionary history.
D) Primate brain size increases depended on the elimination of duplicate master genes.
E) Inactivation of the ghrelin gene likely makes chimpanzee brains larger than human brains.

Question

Quizplus · Accepted Answer

Comparisons of brain size within the primate family require an adjustment for body size. This is because the larger the body size, the larger the brain size required to support it. Therefore, adjusting for body size allows for a fair comparison of brain size across different primate species.

Which of the Following Is True of the Evolution of the Human