Question

if a geneticist describes a trait as being 70% penetrant, what would that mean? multiple choice the trait is present in 70% of the population individuals with the trait show variation in expression. only 70% of the individuals who carry the alleles for a trait express the trait. it is lethal in 30% of the individuals who have the trait

Explanation:

Penetrance in genetics refers to the proportion of individuals with a particular genotype (carrying the alleles for a trait) that express the associated phenotype. A 70% penetrant trait means that out of all individuals who have the alleles for that trait, 70% of them actually show the trait.

Answer:

C. Only 70% of the individuals who carry the alleles for a trait express the trait.