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.

During the change associated with twentieth century, biologist Nettie Stevens ended up being driven to fix a systematic 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? Inside her pioneering work on Bryn Mawr university, Stevens — whoever birthday celebration is today, July 2 — found the sex chromosomes that produce the distinction. “Nettie Stevens discovered XY intercourse chromosomes. She did not get credit because she had two X’s.” の続きを読む