Search results
Nettie Maria Stevens (July 7, 1861 – May 4, 1912) [1] was an American geneticist who discovered sex chromosomes. In 1905, soon after the rediscovery of Mendel 's paper on genetics in 1900, she observed that male mealworms produced two kinds of sperm, one with a large chromosome and one with a small chromosome.
Nettie Marie Stevens is shown here looking through a microscope while studying at the Stazione Zoologica in Naples, Italy, in 1909. In 1904, soon after getting her Ph.D. in biology, Stevens was awarded a grant from Carnegie Science. Her 1905 paper “Studies in Spermatogenesis with Especial Reference to the Accessory Chromosome” produced some ...
People also ask
Who was Nettie Maria Stevens?
Who is Nettie Stevens?
How old was Nettie Maria Stevens when she died?
What did Nettie Maria Stevens discover?
Jun 20, 2010 · For her time, she was an emerging breed: a woman of science making the leap from the world of data collection to that of male-dominated interpretive work. Stevens was born in Cavendish, Vermont, on 7 July 1861 to Julia Adams and Ephraim Stevens.
Nettie Maria Stevens was born on July 7, 1861, in Cavendish, Vermont, to Julia and Ephraim Stevens. After the death of her mother, her father remarried and the family moved to Westford, Massachusetts. She was graduated from Westford Academy in 1880. Stevens taught high school and was a librarian. Her teaching duties included courses in ...
Jul 7, 2016 · The 155th birthday of Nettie Stevens, the biologist who discovered that sex is determined by X and Y chromosomes, is celebrated with a Google Doodle, at a time when women are seeing their...
Oct 5, 2021 · In the end, it was Stevens’s model that better explained the connection between genetics and sex determination. The Life of Nettie Maria Stevens. Born in Cavendish, Vermont in 1861, Dr. Stevens’s education and career trajectory were quite impressive, especially during a time when doors were often closed to women in science.
Mar 19, 2015 · STEM Girls: Nettie Stevens. Mar 19, 2015. Nettie Stevens. Image from Wikipedia. People understood the difference between male and female before Nettie Stevens, but it was because of her work in genetics that we understand how that difference comes about. Born in 1861, Nettie was an exceptionally bright student, and, after teaching for a few ...
