Search results
Jun 20, 2010 · By experimenting on germ cells, cytologist Nettie Maria Stevens collected evidence to support the connection between heredity and the sex of offspring. Stevens was able to interpret her data to conclude that chromosomes have a role in sex determination during development.
May 12, 2023 · May 12, 2023. Art by Malia Kuo. Nettie Maria Stevens was born on July 7, 1861, in Cavendish, Vermont, where her family had lived for several generations. Still feeling the aftereffects of the Civil War, women in the US generally had few educational and professional opportunities.
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.
Mar 21, 2022 · One of the virtues of Nettie Stevens' work is the diversity of species where she observed the segregation of different sex chromosome systems. Stevens published part II of Studies in spermatogenesis in June of 1906, where she studied the spermatogenesis of 23 more species in Coleoptera, and in August 1906 a footnote was added containing results ...
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.
Mar 31, 2016 · Nettie Stevens: Sex chromosomes and sexism – Genes to Genomes. By Cristy Gelling on March 31, 2016. At the time of her death in 1912, Nettie Maria Stevens was a biologist of enough repute to be eulogized in the journal Science by future Nobelist Thomas Hunt Morgan and for her passing to be noted in The New York Times.
Mar 21, 2022 · It is Dr Nettie M. Stevens' Studies in spermatogenesis (1905) that provided the unequivocal evidence that the inheritance of the Y chromosome initiated male development in mealworms. This result established that sex is indeed a Mendelian trait with a genetic basis and that the sex chromosomes play a critical role.
