Which of these is an example of normalizing selection?
A) birth weight in babies
B) color change in moths
C) increased canine size in baboons
D) bigger brain size in humans

Question

Quizplus · Accepted Answer

Normalizing selection is when natural selection favors average traits rather than extreme traits. In the case of birth weight in babies, we see that babies born at an average weight tend to have higher survival rates compared to babies born at an extremely low or extremely high weight. Therefore, natural selection favors average birth weights, leading to normalizing selection. The other options do not necessarily exemplify normalizing selection.

Which of These Is an Example of Normalizing Selection