NEET BIOLOGY

Detailed explanation-1: -A dominant trait will always be expressed in the offspring if the dominant allele is present, even if there is only one copy of it (heterozygous or dominant homozygous, Aa or AA).

Detailed explanation-2: -Dominant alleles are always expressed if present in the genotype. This can occur either with two dominant alleles (homozygous dominant) or one dominant allele and one recessive allele (heterozygous).

Detailed explanation-3: -A genotype is always expressed in the phenotype.

Detailed explanation-4: -The proportion of genotypes that actually show expected phenotypes is called penetrance.

Detailed explanation-5: -A key difference between phenotype and genotype is that, whilst genotype is inherited from an organism’s parents, the phenotype is not. Whilst a phenotype is influenced the genotype, genotype does not equal phenotype.