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

A bell-shaped curve of phenotypic variation is a representation of ____.A) incomplete dominanceB) continuous variationC) multiple allelesD) epistasisE) environmental effects on phenotypes

Sandra Elizabeth · Accepted Answer

Final Answer : B, Explanation :  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 ____.

A) incomplete dominance
B) continuous variation
C) multiple alleles
D) epistasis
E) environmental effects on phenotypes

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