5) Nettie Stevens
Geneticist Who Worked on the Theory of Sex Determination
Born: 7 July 1861, Cavendish, Vermont, United States of America
Died: 4 May 1912, Baltimore, Maryland, United States of America
Geneticist and one of two scientists who theorized sex determination by chromosomes (the other was a guy and they discovered the idea at the same time independently).
She earned a master’s degree in biology from Stanford and a PhD in 1903. She became an assistant at the Carnegie Institute.
Nettie died from breast cancer.
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Women in Science by Rachel Ignotofsky