Question

what are alleles in biology ​

Answer 1

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An allele is one of two or more versions of a gene. An individual inherits two alleles for each gene, one from each parent. If the two alleles are the same, the individual is homozygous for that gene.

Answer 2

An organism have two gene of a character in which one is from maternal and the other is paternal. These two genes are situated on the same locus or homologous chromosome then such genes are known as alleles or allelic genes.

Some important points on alleles :-

1. Those genes are known as alleles which are located at the same locus thus we can say that all the alleles are genes but all the genes are not allele.

2. One point to be noted that non allelic genes can never be located in the same chromosome.

3. Alleles show two versions because it contains two copies of each chromosomes.