Question

what is an allele?

Explanation:

An allele is one of two or more versions of a gene. They are located at the same position (locus) on a pair of homologous chromosomes. Alleles can be dominant or recessive. Dominant alleles show their effect even if an individual has only one copy of the allele (heterozygous). Recessive alleles show their effect only when an individual has two copies of the allele (homozygous). For example, in the gene for eye color, there are alleles for brown eyes and blue eyes.

Answer:

An allele is one of two or more versions of a gene located at the same position on homologous chromosomes, which can be dominant or recessive.