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Edmund Beecher Wilson

American zoologist and geneticist
Edmund Beecher Wilson was a pioneering American zoologist and geneticist. He wrote one of the most influential textbooks in modern biology, The Cell. He discovered the chromosomal XY sex-determination system in 1905—that human males have XY and... Wikipedia
Born: October 19, 1856, Geneva, IL
Died: March 3, 1939 (age 82 years), New York, NY