A graph of phenotypic variation similar to the illustration below strongly suggests
A)incomplete dominance.
B)codominance.
C)epistasis.
D)polygenic inheritance.
E)environmental effects on phenotype.

Question

Quizplus · Accepted Answer

The graph depicts a continuous range of phenotypic variation, which is characteristic of polygenic inheritance. Polygenic traits are controlled by multiple genes and can result in a spectrum of phenotypes, rather than distinct categories. Incomplete dominance and codominance typically result in intermediate or blended phenotypes, not a continuous range. Epistasis involves one gene masking or modifying the expression of another gene, which would not result in a continuous range of phenotypes. Environmental effects can also influence phenotype, but would not necessarily result in a continuous distribution.

A Graph of Phenotypic Variation Similar to the Illustration Below