Alfred Henry Sturtevant was an influential American geneticist who made historic contributions to the scientific understanding of chromosomes. Active during the twentieth century, he is most famous for constructing the very first genetic map of a chromosome in 1911. This landmark achievement laid the groundwork for modern genomic mapping and altered the trajectory of genetic research.\n\nOver the course of his career, Sturtevant maintained a significant professional collaboration with Thomas Hunt Morgan. Together, they focused their research on the model organism Drosophila melanogaster, commonly known as the fruit fly. Through his meticulous observations of the development of these flies—specifically those in which the earliest cell division produced two distinct genomes—Sturtevant was able to measure the embryonic distance between organs. This measurement unit was later designated as the 'sturt' in recognition of his pioneering work.\n\nSturtevant's dedication to science earned him prestigious recognition. On February 13, 1968, he was honored by President Lyndon B. Johnson with the 1967 National Medal of Science, celebrating his enduring legacy and foundational discoveries in the field of genetics.
