The fact that the average human birthweight remains at about seven pounds is due to ____.
A)modern prenatal care
B)the forces of stabilizing selection
C)conscious effort on the part of mothers
D)the limitations of food sources
E)selection tendencies moving in the direction of increasing birthweight

Question

Quizplus · Accepted Answer

The forces of stabilizing selection keep the average human birthweight at about seven pounds. This means that babies whose birthweight is significantly lower or higher than seven pounds may have a lower chance of survival and reproduction, which results in the average birthweight remaining stable over time.

The Fact That the Average Human Birthweight Remains at About