LIFE SCIENCE

Detailed explanation-1: -An allele is a variant form of a gene. Some genes have a variety of different forms, which are located at the same position, or genetic locus, on a chromosome. Humans are called diploid organisms because they have two alleles at each genetic locus, with one allele inherited from each parent.

Detailed explanation-2: -When the copies of a gene differ from each other, they are known as alleles. A given gene may have multiple different alleles, though only two alleles are present at the gene’s locus in any individual.

Detailed explanation-3: -allele, also called allelomorph, any one of two or more genes that may occur alternatively at a given site (locus) on a chromosome. Alleles may occur in pairs, or there may be multiple alleles affecting the expression (phenotype) of a particular trait.

Detailed explanation-4: -It derives from the Greek prefix -, allelo-, meaning “mutual", “reciprocal", or “each other", which itself is related to the Greek adjective , allos (cognate with Latin alius), meaning “other".