NEET BIOLOGY

Detailed explanation-1: -In polygenic inheritance, each allele has a cumulative or additive effect on the phenotype thus generating continuous variation, e.g. skin pigmentation, height, etc.

Detailed explanation-2: -The term polygenic inheritance is typically used synonymously with continuous variation, but the latter may theoretically result from presence of interaction between a single locus and environmental factors.

Detailed explanation-3: -Human phenotypes or human physical traits such as hair color, height, skin color, blood pressure, intelligence, autism, and longevity are some of the examples of polygenic inheritance.

Detailed explanation-4: -Continuous variation is also known as polygenic inheritance and is controlled by several genes. Most characteristics of an individual show polygenic inheritance. Continuous variation shows a range of values between a minimum and a maximum.

Detailed explanation-5: -Instead of being expressed in a ratio as single-gene traits are, polygenic traits are expressed continuously and usually form a bell curve when charted.