NEET BIOLOGY

Detailed explanation-1: -A dominant allele produces a dominant phenotype in individuals who have one copy of the allele, which can come from just one parent. For a recessive allele to produce a recessive phenotype, the individual must have two copies, one from each parent.

Detailed explanation-2: -Definition. A phenotype that occurs even when the causal allele occurs in a heterozygous individual.

Detailed explanation-3: -Alleles produce phenotypes (or physical versions of a trait) that are either dominant or recessive. The dominance or recessivity associated with a particular allele is the result of masking, by which a dominant phenotype hides a recessive phenotype.

Detailed explanation-4: -Dominant refers to the relationship between two versions of a gene. Individuals receive two versions of each gene, known as alleles, from each parent. If the alleles of a gene are different, one allele will be expressed; it is the dominant gene. The effect of the other allele, called recessive, is masked.

Detailed explanation-5: -Examples of Dominant Traits There are many characteristics of the human phenotype, which are controlled by dominant alleles: Dark hair is dominant over blonde or red hair. Curly hair is dominant over straight hair. Baldness is a dominant trait.