An allele that is hidden whenever the dominant allele is present

Answer 1

An allele that is hidden whenever the dominant allele is present is referred to as a recessive allele. In genetics, alleles can be classified as either dominant or recessive, with dominant alleles masking the expression of recessive alleles in heterozygous individuals (those with one of each type of allele). For example, if an individual has one dominant allele (A) and one recessive allele (a), the dominant trait associated with allele A will be expressed, and the trait associated with the recessive allele a will not be visible in the phenotype.