Q. The phenomenon of pleiotropism refers to
A) more than two genes affecting a single character.
B) presence of several alleles of a single gene controlling a single crossover.
C) presence of two alleles, each of the two genes controlling a single trait.
D) a single gene affecting multiple phenotypic expression.
Explanation
[Solution from source] A single gene exhibiting multiple phenotypic expression is called a pleiotropic gene. Answer (4).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.