Erwin Chargaff (Czernowitz, August 11, 1905 - Bukowina, Austria, June 20, 2002) was an Austrian biochemist who emigrated to the United States during the Nazi era. Through careful experimentation, Chargaff discovered two rules that helped lead to the discovery of the double helix structure of DNA. Chargaff had one son, Thomas, with his wife Vera Broido, whom he married in 1928. Chargaff became an American citizen in 1940. Wikipedia
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