a gene that under certain conditions causes the death of an organism.
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- lethal chamber,
- lethal dose,
- lethal factor,
- lethal midline granuloma,
- lethal mutation,
Origin of lethal gene
First recorded in 1935–40
Also called lethal factor, lethal mutation.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
A gene whose expression results in the death of the organism.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.