The colour of the flower in pea is always linked with

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

$A$ gene that expresses its effect on more than one trait is known as:

Pleiotropy is a condition in which a single gene

The phenomenon of pleiotropism refers to

Find the correct statement.
$(1)$ Generally a gene regulates a trait,but sometimes one gene has an effect on multiple traits.
$(2)$ The trait $AB$-blood group of man is regulated by one dominant allele and another recessive allele. Hence it is co-dominant.