Nettie Stevens discovered XY intercourse chromosomes. She did not get credit because she had two X’s.
Nettie Stevens discovered XY intercourse chromosomes. She did not get credit because she had two X’s.
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During the change for the century that is 20th biologist Nettie Stevens had been driven to resolve a clinical secret which had perplexed humanity for millennia. The secret had been therefore easy but daunting: Why do men become girls and boys become girls? […]