A bell-shaped curve of phenotypic variation is a representation of ____.
A)incomplete dominance
B)continuous variation
C)multiple alleles
D)epistasis
E)environmental effects on phenotypes

Question

Quizplus · Accepted Answer

A bell-shaped curve is indicative of continuous variation, which occurs when there are multiple genes influencing a trait and/or environmental factors affecting the expression of the trait. Incomplete dominance refers to a situation in which the heterozygote expresses an intermediate phenotype, multiple alleles refer to the presence of more than two forms of a gene in a population, and epistasis refers to the interaction between different genes affecting a single trait. None of these concepts specifically relate to the distribution of phenotypes in a population.

A Bell-Shaped Curve of Phenotypic Variation Is a Representation of ____