2 doctors weighed in:
What makes a human male's genitals unique and make him act like a king?
2 doctors weighed in

Dr. Mary Vanko
Obstetrics & Gynecology
1 doctor agrees
In brief: "Cock Sure"
The y chromosome causes sexual differentiation.

In brief: "Cock Sure"
The y chromosome causes sexual differentiation.
Dr. Mary Vanko
Dr. Mary Vanko
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