| lethal mutation n. A mutant trait that leads to a phenotype incapable of effective reproduction. |
mutation (mūtā´sh
n),n a departure from the parent type, as when an organism differs from its parents in one or more heritable characteristics; caused by genetic change.
mutation, gene,
n a sudden and permanent change in a gene. The term mutation is sometimes used in a broader sense to include chromosome aberrations.
mutation, lethal,
n a mutation leading to death of the offspring at any stage.
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