ALLELE DEFINITION IN BIOLOGY
Allele can explained by taking an example. We all have gene for eye colour but of different colours. Eye colour is defined as gene and variation in colours are defined as allele.
Chromosomes occur in pairs that comes from a different parent. Thus there are two alleles for a gene and organisms inherit one allele from each parent for a gene. If the two alleles inherited from parents are same then it is called as homozygous and when two alleles are different then they are called as heterozygotes.
Gregor Mendel define the “allele” in the law of segregation.