Michael Frederic Guyer (1874–1959) was an American cytologist and zoologist.
Guyer was professor of zoology at the University of Wisconsin.
[1] In 1902, he independently discovered Mendel's laws from the cytology of spermatogenesis in pigeon hybrids.
[2][3] Between 1918 and 1924, Guyer with Elizabeth A. Smith performed experiments attempting to demonstrate Lamarckism in which fowl serum antibodies for rabbit lens-protein were injected into pregnant rabbits which resulted in defects in the eyes of some of their offspring that were inherited through eight generations.
[4] Their experiments were criticized and were not repeated by other scientists.