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Home > The Writer's Almanac > The Writer's Almanac - Wednesday, July 7, 2021
Podcast: The Writer's Almanac
Episode:

The Writer's Almanac - Wednesday, July 7, 2021
Category: Arts
Duration: 00:05:00
Publish Date: 2021-07-07 08:00:20
Description: Today is the birthday of American genetics pioneer Nettie Stevens (1861) who discovered that the combinations XX and XY in chromosomes determined the sex of an organism.
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