Biology - Alleles (Dominant and Recessive)

⁣An allele is one of two or more versions of DNA sequence (a single base or a segment of bases) at a given genomic location. ⁣The most common interaction between alleles is a dominant/recessive relationship. An allele of a gene is said to be dominant when it effectively overrules the other (recessive) allele. Eye colour and blood groups are both examples of dominant/recessive gene relationships.