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The scientific theory that explains how species evolve over time through the process of natural selection and genetic variation.
The short answer is: no— are not determined by the physical size of a man’s testicles, although the association is a potent and there are measurable biological correlations between testis size and and...
DNA evidence has turned Darwin’s qualitative insight that species share ancestry into a quantitative, testable framework by showing that genetic sequences cluster exactly as descent-with-modification ...
Medical studies report a modest, specific correlation: women who report preferring longer-than-average penises also report higher frequency of vaginal orgasms during penile–vaginal intercourse, but sh...
Most evidence does not support the idea that "most men, given the choice, would pick 7 inches" for their own penis; population averages are about 5.1–5.5 inches erect and research of partner preferenc...