For a multifactorial,polygenic trait,the characteristic shape of the mathematical plot of frequency for each phenotype class is
A)linear,going up.
B)linear,going down.
C)a bell curve.
D)a square curve.

Question

Quizplus · Accepted Answer

A multifactorial polygenic trait is controlled by multiple genes and environmental factors. The distribution of phenotypes for such traits follows a bell-shaped normal distribution curve. This means that the majority of individuals in the population will have an intermediate phenotype, while fewer individuals will have extreme phenotypes on either end of the spectrum. Therefore, the mathematical plot of frequency for each phenotype class for a multifactorial polygenic trait is a bell curve.

For a Multifactorial,polygenic Trait,the Characteristic Shape of the Mathematical Plot