A Bell-Shaped Curve of Phenotypic Variation is Indicative Of

Question

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

Accepted Answer

A bell-shaped curve of phenotypic variation is indicative of continuous variation, which refers to the variation of a trait within a population that follows a normal distribution curve. This occurs when the trait is influenced by multiple genes and/or environmental factors, resulting in a range of intermediate phenotypes within a population.