Day 4: Nettie Stevens (1861 – 1912). Biologist. Scientist at Bryn Mawr College. Discovered that the X and Y chromosome were responsible for determining the sex of individuals.Day 4: Nettie Stevens (1861 – 1912). Biologist. Scientist at Bryn Mawr College. Discovered that the X and Y chromosome were responsible for determining the sex of individuals.
Day 4: Nettie Stevens (1861 – 1912). Biologist. Scientist at Bryn Mawr College. Discovered that the X and Y chromosome were responsible for determining the sex of individuals.