Hydrangeas are flowering plants with large, showy blooms. When the plant is grown in alkaline soil, the flowers are pink. When the plant is grown in acidic soil, the flowers turn blue. This change is phenotype is an example of
A) codominance.
B) incomplete dominance.
C) environmental influence.
D) polygenic inheritance.
E) epistatic interaction.

Question

Quizplus · Accepted Answer

The change in color of hydrangea flowers based on soil acidity is an example of environmental influence, as it is not determined by genetic factors but rather external factors such as soil pH.

Hydrangeas Are Flowering Plants with Large, Showy Blooms