lethal allele


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Related to lethal allele: Multiple alleles

lethal allele

n.
An allele whose expression results in the death of the organism, usually during embryogenesis.
References in periodicals archive ?
One of the reasons why it has been difficult to bring microevolutionary experiments into classrooms is the obvious tradeoff between choosing an allele that is strongly selected against, such as a lethal allele, and choosing one that is easy to visualize.
The expected frequency of flightless mutants was estimated according to discrete generation selection against a lethal allele (Crow & Kimura, 1970: eq.