Pleiotropy is a condition in which a single gene

Define the term: Pleiotropy.

The gene disorder phenylketonuria is an example of

The best example for pleiotropy is

When one gene controls two or more different characters simultaneously,the phenomenon is called

In $Drosophila$,the gene for white eye mutation is also responsible for the depigmentation of body parts. Thus,a gene that controls several phenotypes is called: