celebratingamazingwomen: Barbara McClintock (1902-1992) was an American scientist and the recipient

Barbara McClintock (1902-1992) was an American scientist and the recipient of the 1983 Nobel Prize for Physiology or Medicine. Her research was crucial to understanding and demonstrating many fundamental ideas in the field of genetics.
Among other ideas, she proved that genes are responsible for turning physical characteristics on and off. Her research during the 60s and 70s, undertaken mainly on maize crops, proved extremely valuable, especially in agriculture.