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2007-03-27 09:05:36 · 3 answers · asked by brandon G 1 in Health Men's Health

3 answers

‘Males and females are not separate entities, shaped independently by natural selection. Both sexes are variants upon a single ground plan, elaborated in later embryology. Male mammals have nipples because females need them and the embryonic pathway to their development builds precursors in all mammalian fetuses, enlarging the breasts later in females but leaving them small (and without evident function) in males.’
- Bully For Brontosaurus - Reflections In Natural History by Stephen Jay Gould, 1991

2007-03-27 11:58:49 · answer #1 · answered by theoryofgame 7 · 0 0

We all start out as females before birth.

2007-03-27 13:29:48 · answer #2 · answered by Lost Poet 6 · 0 0

that is the way everyone is born

2007-03-31 06:37:52 · answer #3 · answered by jerry 7 · 0 0

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