Thomas Hunt Morgan

Born in Lexington, Kentucky, in 1866, Thomas Hunt Morgan trained as a zoologist and embryologist before becoming one of the key figures in early genetics. He studied at the State College of Kentucky and earned his doctorate at Johns Hopkins University, later teaching at Bryn Mawr College, Columbia University, and the California Institute of Technology.

Morgan became famous for experiments with the fruit fly Drosophila melanogaster. Working with students and colleagues at Columbia, he helped show that genes are arranged on chromosomes and that linked traits can be mapped, giving biologists a powerful way to study inheritance. Those discoveries played a major role in establishing the chromosome theory of heredity.

In 1933, he received the Nobel Prize in Physiology or Medicine for his discoveries on the role of chromosomes in heredity. Beyond his own experiments, he also built influential research groups and trained scientists who helped shape twentieth-century biology.