Nettie Maria Stevens
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* July 7, 1861 in Cavendish (Vermont, USA), † May 4, 1912 in Baltimore (Maryland, USA)
Nettie Stevens discovered that chromosomes determine biological sex. At a time when women were “blamed” for giving birth to a daughter (instead of the longed-for male governor), this is particularly special. Her discovery was due to the fact that she also conducted research on female fruit flies - and not just on sperm like her professor - and thus found the difference: the biological female sex is defined by two larger chromosomes, while the biological male sex has one large and one small chromosome. A sensation! But her professor cleverly claimed the discovery for himself and to this day is solely responsible for the discovery of sex determination by chromosomes in all biology books.
Incidentally, it was Nettie Stevens who introduced the common fruit fly (Drosophila) to laboratory research, replacing the less suitable mealworm. Nettie died young of breast cancer. She was active in research throughout her life and published over 40 scientific papers.
Frame: | Shadow gap (white) |
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Technique & Materials: | Oil and ink on canvas |
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