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  1. Nettie Maria Stevens (7. juli 1861 – 4. maj 1912) bila je američka genetičarka koja je otkrila spolne hromosome. Godine 1905., ubrzo nakon ponovnog otkrića rezultata Mendelovih istraživanja o genetici 1900. godine, primijetila je da muški crvi brašnara proizvode dva tip spermatozoida , jedan sa velikim hromosomom i jedan sa malim hromosomom.

  2. 7. Juli 2016 · Nettie Stevens analizó la diferenciación celular en embriones y en el estudio de los cromosomas. Si antes la ciencia había sostenido que los cromosomas se organizaban en largos bucles, ahora ...

  3. 12. Mai 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. However, in part because of her father’s accumulated wealth ...

  4. 18. Jan. 2024 · Biografía de Nettie Stevens. Nettie Stevens, nacida el 7 de julio de 1861 en un pequeño pueblo de Vermont, Estados Unidos, fue pionera en los campos de la embriología y la citogenética. Desde sus primeros años de colegio sus habilidades científicas ya destacaban, graduándose como la primera de su clase en primaria.

  5. 21. März 2022 · 2. Nettie Stevens’ career. Nettie Maria Stevens was born on 7 July 1861 in Cavendish, Vermont, USA (figure 1).Stevens started her education at Westford Academy (1872–1880) and Westfield State Normal School (now Westfield State University; 1881–1883), to prepare for a career in teaching, and for the next decade or so Stevens worked as a teacher or librarian [].

  6. 16. März 2022 · Nettie Stevens (1861-1912) fue una importante científica y genetista de principios del siglo XX, conocida principalmente por ser una de las primeras investigadoras en describir y concretar las bases cromosómicas que determinan el sexo en las especies

  7. 17. Nov. 2020 · In 1994, Stevens was added to the National Women’s Hall of Fame, and on the 155th anniversary of her birthday in 2016 was recognized with a Google Doodle, which directed internet searches to learn more about her own scientific discoveries. In time, perhaps her name will finally see its rightful place alongside Wilson’s as the co-discoverer of X/Y sex determination, and receive the ...