Nature's "default setting" is to make every mammal's external anatomy ____.
A) male
B) female
C) intermediate between male and female
D) fully both male and female

Question

Quizplus · Accepted Answer

Nature's "default setting" is to make every mammal's external anatomy female. This is because the female reproductive system is necessary for the survival of the species, while the male reproductive system is an adaptation that arose later in evolutionary history.

Nature's "Default Setting" Is to Make Every Mammal's External Anatomy