Nettie Maria Stevens is an American geneticist who discovered the sex chromosomes. In 1905, shortly after rediscovering Mendel's paper on genetics in 1900, she observed that the male powderworm produced two types of sperm, one with a large chromosome and the other with a chromosome. small. When large chromosomes fertilize eggs, they produce females, and when sperm with a small chromosome fertilize an egg, they produce a male. The pair of sex chromosomes she later studied were called the X and Y chromosomes
|Born||Nettie Maria Stevens, July 07, 1861, Cavendish, Vermont, United States|
|Died||May 04, 1912, Baltimore, Maryland, United States|
|Institutions||Bryn Mawr College, Carnegie Institution of Washington|
|Alma mater||Westfield Normal School, Stanford University, Bryn Mawr College|
|Thesis||Further studies on the ciliate Infusoria, Licnophora and Boveria (1903)|
|Doctoral students||Alice Middleton Boring|
|Known for||XY sex-determination system|
|Influences||Edmund Beecher Wilson, Thomas Hunt Morgan|
The human geneticist discovered what is known as the XY sex determination system. She is an associate in experimental morphology at Bryn Mawr College.
She received her BA and MA from Stanford before studying cytology at Bryn Mawr College.
Google presented it in a doodle of its 155th birthday in 2016.
She died of breast cancer at Johns Hopkins Hospital 9 years after completing her doctorate. She is buried next to her father Ephraim and sister Emma in Westford, Massachusetts.
She and Richard Lewontin are recognized for their contributions as geneticists.
- Timeline of Women in Science - This is the timeline of Women in Science, which spans from ancient history to the 21st century
- Alumni of Westfield State University
- Scientists from Vermont
- Scientists from Massachusetts
- Female geneticists
- American female biologists
- Graduated from Bryn Mawr College
- American geneticist
Latest information about Nettie Stevens updated on May 10 2021.