Nettie Stevens: The Pioneering Geneticist Who Discovered XY Sex Chromosomes
In the annals of genetic history, few figures embody both scientific brilliance and historical injustice as poignantly as Dr. Nettie Maria Stevens. While her male contemporaries received Nobel Prizes and eponymous accolades, Stevens—a cytologist and geneticist working in the early 1900s—made the landmark discovery that sex is determined by specific chromosomes, only to be largely written out of the textbooks she should have dominated.