jh morgan

Medical Dictionary

morgan mor·gan (môr'gən)

Abbr. M A unit for expressing the relative distance between genes on a chromosome based on the frequency with which the genes cross over; one unit equals a theoretical crossover value of 100 percent between two loci.

American Heritage
Medical Dictionary

Morgan Mor·gan (môr'gən), Thomas Hunt. 1866-1945.

American biologist. He won a 1933 Nobel Prize for establishing the chromosome theory of heredity by his studies of the fruit fly Drosophila.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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