Geneticists in the early 20th century were interested in the way genes are passed down from one generation to the next. Their research also questioned the way environments shaped genetic expression. This gave rise to the classic debate over nature versus nurture.
APS Members working as geneticists were particularly active in the Society during the 20th century. In working with other Members to fight injustice and in donating their papers to the APS, they have left an important legacy for future Members and scholars.