NEET BIOLOGY

Detailed explanation-1: -Answer and Explanation: One copy of a gene associated with a particular trait is present. This means that this allele is masking the effect of the other allele. Therefore, the trait is dominant .

Detailed explanation-2: -Recessive inheritance means both genes in a pair must be abnormal to cause disease. People with only one defective gene in the pair are called carriers. These people are most often not affected with the condition.

Detailed explanation-3: -Phenotype Phenotype refers to an individual’s observable traits, such as height, eye color and blood type. A person’s phenotype is determined by both their genomic makeup (genotype) and environmental factors.

Detailed explanation-4: -Recessive alleles only express their phenotype if an organism carries two identical copies of the recessive allele, meaning it is homozygous for the recessive allele. This means that the genotype of an organism with a dominant phenotype may be either homozygous or heterozygous for the dominant allele.