PATHOLOGY

Detailed explanation-1: -The majority of human genes are thought to have more than two normal versions or alleles. Traits controlled by a single gene with more than two alleles are called multiple allele traits. An example is ABO blood type.

Detailed explanation-2: -Polygenic inheritance. Some characteristics are polygenic, meaning that they’re controlled by a number of different genes.

Detailed explanation-3: -When there is a gene existing in more than two allelic forms, this condition is referred to as multiple allelism. Allelism refers to any of the several forms of a gene. These genetic variations arise usually through mutation and therefore are responsible for hereditary variations.