lethal gene

noun Genetics.
a gene that under certain conditions causes the death of an organism.
Also called lethal factor, lethal mutation.


Origin:
1935–40

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American Heritage
Medical Dictionary

lethal gene n.
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.
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Example sentences
Determine best promoters and enhancers for effectiveness of conditional lethal gene for codling moth.
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