NEET BIOLOGY

Detailed explanation-1: -The masked allele is called recessive and the allele that expresses itself is called dominant. In presence of a dominant allele, the recessive character cannot be expressed i.e., masked. When a recessive allele is present in double dose, only the recessive character is expressed.

Detailed explanation-2: -A dominant allele hides a recessive allele and determines the organism’s appearance.

Detailed explanation-3: -But recessive deleterious alleles are “hidden” from natural selection by their dominant non-deleterious counterparts. An individual carrying a single recessive deleterious allele will be healthy and can easily pass the deleterious allele into the next generation.

Detailed explanation-4: -The type of allele that is often hidden or overshadowed by dominant allele is known as a recessive allele. The trait expressed by the recessive allele only manifests if the individual is homozygous for that trait. Alleles are different forms of genes for a particular trait.

Detailed explanation-5: -The recessive trait is hidden in the heterozygous individual (Dd) if the other allele is inherited in a dominant fashion, and so this person is a called a “carrier” of the recessive allele, but does not manifest the disease or trait.