lethal gene

/ˌliθəl dʒin/
IPA guide

Definitions of lethal gene
  1. noun
    any gene that has an effect that causes the death of the organism at any stage of life
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    type of:
    cistron, factor, gene
    (genetics) a segment of DNA that is involved in producing a polypeptide chain; it can include regions preceding and following the coding DNA as well as introns between the exons; it is considered a unit of heredity
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