Michael F. (Michael Frederic) Guyer

Born in Plattsburg, Missouri, in 1874, Michael Frederic Guyer became an American zoologist and cytologist whose career was closely tied to the rise of modern genetics. He studied at the University of Missouri and the University of Chicago, taught early in his career at Nebraska and Cincinnati, and later joined the University of Wisconsin, where he served for many years as professor of zoology and eventually became emeritus.

Guyer is remembered for early work linking chromosome behavior with Mendelian heredity, an important step in the developing science of genetics. He also wrote widely used books, including Being Well-Born, Animal Micrology, and Our Present Knowledge of Heredity, which helped explain heredity, biology, and evolution to both students and general readers.

Some of his experimental work, especially efforts with Elizabeth A. Smith that aimed to support Lamarckian inheritance, is now remembered more as part of the history of scientific debate than as accepted science. Even so, his career captures an important moment when biologists were trying to understand how traits are passed on, and his writing helped bring those big questions to a wider audience.