In an organism,mutation in a single gene exhibits multiple phenotypic expressions. Identify the underlying genetic mechanism in the above instance.

$A$ gene which controls more than one character is called $:-$

Which of the following is not an example of pleiotropy?

The metabolic disorder Phenylketonuria is an example of which type of genetic effect?

Which of the following is an example of a pleiotropic gene?

In humans,the gene responsible for Phenylketonuria produces multiple phenotypic expressions,collectively known as a syndrome. This gene causes mental retardation,broad incisor teeth,skin pigmentation,and excessive sweating. What is this type of gene called?