question

state giving one example each, what are the following pattern of inheritance called, where

(a) a single gene controls more than one phenotypic expression.

(b) two, or more than two genes are involved in controlling a phenotypic character.

 

 

 

 

 

 

 

 

a) pleiotropic inheritance- example: sickle cell anaemia

b) polygenic inheritance- example: the colour of skin