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Stevens conducted research and taught at Bryn Mawr and Cold Spring Harbor until she died of breast cancer in 1912, just nine years after completing her doctorate. During her short but significant career, Stevens published a remarkable 40 papers on such topics as chromosomes, regeneration, and taxonomy.
Apr 30, 2024 · Nettie Stevens (born July 7, 1861, Cavendish, Vermont, U.S.—died May 4, 1912, Baltimore, Maryland) was an American biologist and geneticist who was one of the first scientists to find that sex is determined by a particular configuration of chromosomes.
- The Editors of Encyclopaedia Britannica
Jun 20, 2010 · People Heredity Reproduction Biography. Stevens, N. M. (Nettie Maria), 1861-1912. Multiple theories about what determines sex were tested at the turn of the twentieth century. By experimenting on germ cells, cytologist Nettie Maria Stevens collected evidence to support the connection between heredity and the sex of offspring.
19th century. Fields: Biology, Genetics, Zoology. Born: 1861 in Cavendish, Vermont (USA) Death: 1912 in Baltimore, Maryland (USA) Nettie Stevens (1861 - 1912) Doodle. Main achievements: XY sex-determination system. Nettie Maria Stevens was an early American geneticist.
Nettie Maria Stevens (July 7, 1861 – May 4, 1912) was an early American geneticist. She discovered sex chromosomes. Stevens saw two kinds of sperms in male mealworms. One had a large chromosome and one had a small chromosome. They were sex chromosomes, which later became known as the X and Y chromosomes. Stevens eventually became fully qualified.
Stevens was a native of Vermont, born in 1861 and dying at the age of 51 in 1912. She studied biology at Westfield State College, where she was only one of three women to graduate between 1872 and 1883. After a few years of teaching, she went on to earn an MA at Stanford University and a PhD at Bryn Mawr College.
Nov 17, 2020 · In 1905, Steven published her findings, which definitively made the case for biological sex as the makeup of X and Y chromosomes. The discovery effectively made her one of the first scientists in the world to understand how chromosomes may be involved in sex determination. Stevens at the Naples Zoological Station in 1909.
