Biography
Born in 1861 in Vermont, Nettie Stevens developed a passion for science at a young age. After teaching for several years, she joined Bryn Mawr College, where she established herself in a field still largely closed to women.
Career
At Bryn Mawr, she studied cells and reproduction. Her research on insects led her to explore chromosomal differences between males and females.
Discoveries
In 1905, she proved that sex is determined by X and Y chromosomes, overturning the beliefs of her time and laying the foundations of modern genetics.
Scientific legacy
She passed away in 1912, leaving behind a major scientific legacy. Rediscovered today, Nettie Stevens embodies the delayed recognition of women in the history of science.