Polygenic inheritance refers to the cumulative effect of two or more genes on a single trait. Pleiotropy refers to a single ancestry that affects multiple traits.
Pleiotropy inheritance refers to the expression in which single gene having multiple phenotypic expressions.
Polygenic inheritance refers to that expression in which trait being controlled by the multiple genes.
Example of pleiotropy is mental problem and example of polygenic is human skin and eye color.
Learn more about the pleiotropy and polygenic inheritance here:-
https://brainly.com/question/14008163
#SPJ1