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Nettie Maria Stevens, US geneticist

Nettie Maria Stevens, US geneticist

C037/5921

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30.3 MB (3.4 MB compressed)

2664 x 3980 pixels

22.6 x 33.8 cm ⏐ 8.9 x 13.3 in (300dpi)

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Credit

AMERICAN PHILOSOPHICAL SOCIETY / SCIENCE PHOTO LIBRARY AMERICAN PHILOSOPHICAL SOCIETY / SCIENCE PHOTO LIBRARY

Restrictions

Editorial use only.

Caption

Nettie Maria Stevens (1861-1912), US geneticist, using a microscope in a laboratory. Stevens was the first to establish that the sex of an animal offspring was determined by the type of chromosome from the sperm transferred in the fertilisation of the egg. Her early death meant that her work was developed and expanded by others, notably the head of her laboratory at the California Institute of Technology, Thomas Hunt Morgan. Photographed in 1909.

Release details

Model release not available. Property release not required.

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