- lethal factor
- lethal mutant
- lethal mutation
- Genes which result in the premature death of the organism; dominant lethal genes kill heterozygotes, whereas recessive lethal genes kill only homozygotes.
Definition from: MeSH via Unified Medical Language System at the National Library of Medicine
- Any gene in which a mutation will result in the premature death of the organism carrying it.
Definition from: CRISP Thesaurus via Unified Medical Language System at the National Library of Medicine
- A gene that in some (as homozygous) conditions may prevent development or cause the death of an organism or its germ cells -- called also lethal factor, lethal mutant, lethal mutation.
Definition from: Merriam-Webster's Medical Dictionary by Merriam-Webster Inc.
See also Understanding Medical Terminology.