Question

please guys tell me what is allele

Answer 1

Alleles are described as either dominant or recessive depending on their associated traits. ... Dominant alleles show their effect even if the individual only has one copy .

Answer 2

each of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome.
An allele is a variant form of a given gene. Sometimes, different alleles can result in different observable phenotypic traits, such as different pigmentation