A pleiotropic gene

Question

A pleiotropic gene (A) controls a trait only in combination with another gene (B) controls multiple traits in an individual (C) is expressed only in primitive plants (D) is a gene evolved during Pliocene.

Tardigrade Admin · Accepted Answer

The ability of a gene to have multiple phenotypic effects because it influences a number of characters simultaneously is known as pleiotropy. The gene having a multiple phenotypic effect because of its ability to control expression of two or more characters is called pleiotropic gene. In human beings pleiotropy is exhibited by syndromes called sickle cell anaemia and phenylketonuria.

Q. A pleiotropic gene

controls a trait only in combination with another gene

controls multiple traits in an individual

is expressed only in primitive plants

is a gene evolved during Pliocene.