Primroses have white flowers when grown above 32°C but red flowers when grown at 24°C. This interaction between phenotypic expression and environment is an example of
A) epistasis.
B) polygenic traits.
C) pleiotropy.
D) multiple allelism.
E) codominance.

Question

Quizplus · Accepted Answer

Multifactorial traits are those controlled by polygenes subject to environmental influences. Epistasis is the interaction between two or more genes that are not alleles) to control a single phenotype.

Primroses Have White Flowers When Grown Above 32°C but Red