See Also: dominant lethal trait(medicine)
dominant trait(medicine)
Herbal medicine (botanical medicine, herbology, phytomedicine)(health)
trait(dictionary)
Trait(medicine)
trait(dictionary)
Medicine Lodge Memorial Hospital- Medicine Lodge(health)
mendelian trait(medicine)
recessive trait(medicine)
intermediate trait(medicine)

dominant lethal trait (medicine)


dominant lethal trait
Trait, expressed in the phenotype if present in the genotype, that precludes having descendants. All such cases are necessarily sporadic and must represent new mutations as the usual methods of classical genetics provide no means of demonstrating any genetic component whatsoever, except for tenuous arguments such as advanced paternal age. Molecular biology may help although the methods may be tedious; if there is an epistatic gene that may mask the trait, the logic is more tractable, though complex.