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Nettie Stevens discovered XY intercourse chromosomes. She don’t get credit because she had two X’s.

Nettie Stevens discovered XY intercourse chromosomes. She don’t get credit because she had two X’s. During the change associated with century that is 20th biologist Nettie Stevens had been driven to fix a clinical secret which had perplexed mankind for millennia. The secret ended up being therefore easy but daunting: Why do males be girls and boys become girls? In

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