What is key to recognition of a trait whose expression is determined by the effects of two or more genes (polygenic inheritance)?
A)A mating between a homozygous and a heterozygous individual produces more than the expected number of offspring expressing the dominant trait.
B)All of the alleles of the gene for that trait are equally expressed.
C)Pleiotropy occurs.
D)The trait varies along a continuum in the population.

Question

Quizplus · Accepted Answer

Polygenic inheritance results in a trait that varies along a continuum in the population. This means that there is no clear distinction between individuals expressing the dominant or recessive trait. Instead, there is a range of expressions of the trait, with some individuals displaying intermediate characteristics. This is known as quantitative inheritance.

What Is Key to Recognition of a Trait Whose Expression