If a trait is heritable, then individuals with a genetic relatedness of 0.5 are expected to
A)exhibit more phenotypic similarity than two random individuals in the population.
B)be as similar in phenotype as a pair of random individuals in the population.
C)have identical phenotypes because they are twins.
D)have an average phenotypic value that is close to the mean of the population.

Question

Quizplus · Accepted Answer

Heritability refers to the proportion of variation in a trait that can be attributed to genetic differences among individuals. If a trait is heritable, individuals with a genetic relatedness of 0.5 (such as siblings or a parent and child) are expected to exhibit more phenotypic similarity than two random individuals from the population because they share a significant proportion of their genes.

If a Trait Is Heritable, Then Individuals with a Genetic