BIOLOGIST

Nettie Stevens

1861 - 1912

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Nettie Maria Stevens (July 7, 1861 – May 4, 1912) 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. When the sperm with the large chromosome fertilized eggs, they produced female offspring, and when the sperm with the small chromosome fertilized eggs, they produced male offspring. The pair of sex chromosomes that she studied later became known as the X and Y chromosomes. Read more on Wikipedia

Her biography is available in different languages on Wikipedia. Nettie Stevens is the 159th most popular biologist (down from 103rd in 2019), the 1,373rd most popular biography from United States (down from 1,008th in 2019) and the 31st most popular American Biologist.

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Among BIOLOGISTS

Among biologists, Nettie Stevens ranks 159 out of 1,097. Before her are Bernard Katz, Thomas Huckle Weller, Bernard Germain de Lacépède, Martin Chalfie, Jakob von Uexküll, and Susumu Tonegawa. After her are Georg Wilhelm Steller, Salvador Luria, George Davis Snell, Renato Dulbecco, Mario Capecchi, and Henry Walter Bates.

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Contemporaries

Among people born in 1861, Nettie Stevens ranks 28. Before her are James Naismith, Prince Carl, Duke of Västergötland, Antoine Bourdelle, Edmund Allenby, 1st Viscount Allenby, Italo Svevo, and Maximilian von Spee. After her are William Bateson, Anton Arensky, István Tisza, Solomon R. Guggenheim, Ranavalona III, and Armando Diaz. Among people deceased in 1912, Nettie Stevens ranks 26. Before her are Johann Martin Schleyer, Benjamin Guggenheim, Osborne Reynolds, William McMaster Murdoch, John Jacob Astor IV, and Gerhard Armauer Hansen. After her are Bolesław Prus, Nogi Maresuke, Arthur MacArthur Jr., Franz Reichelt, George Darwin, and Mykola Lysenko.

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Others Deceased in 1912

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In United States

Among people born in United States, Nettie Stevens ranks 1,373 out of 20,380. Before her are Sarah Jessica Parker (1965), Ron Howard (1954), Ben Carson (1951), Peter Agre (1949), Irving Fisher (1867), and John Cocke (1925). After her are John F. Kelly (1950), Wesley Snipes (1962), Richard S. Castellano (1933), Edward Norton (1969), Izzy Stradlin (1962), and Cybill Shepherd (1950).

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Among BIOLOGISTS In United States

Among biologists born in United States, Nettie Stevens ranks 31. Before her are Daniel Nathans (1928), E. O. Wilson (1929), Howard Martin Temin (1934), Joshua Lederberg (1925), Thomas Huckle Weller (1915), and Martin Chalfie (1947). After her are George Davis Snell (1903), Leland H. Hartwell (1939), Norman Borlaug (1914), Carl Woese (1928), Paul Greengard (1925), and Bruce Beutler (1957).

American born Biologists

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