Question

The gene which controls many characters is called

• A. Multiple gene
• B. Polygene
• C. Co-dominant gene
• D. Pleiotropic gene

Answer 1

The correct option is D

Pleiotropic gene

A gene having multiple phenotypic effects is called a pleiotropic gene.

The alleles which, when present together in a heterozygous individual, express their traits independently instead of showing a dominant-recessive relationship are called co-dominant alleles.

Two or more pairs of non-allelic genes, which produce a cumulative effect on the same phenotypic quantitative character, are called multiple genes or cumulative genes or polygenes.