Harvey Wiley was an American chemist and pioneering crusader for pure food and drug laws, instrumental in passing the 1906 Pure Food and Drug Act.
Barbara McClintock, a pioneering American geneticist, revolutionized understanding of genetics through her groundbreaking work on maize.
George Beadle was a renowned American geneticist and Nobel laureate, known for his groundbreaking work on the one gene-one enzyme hypothesis.
Sewall Wright was an American geneticist and evolutionary biologist who made significant contributions to the development of modern evolutionary theory.