NEET BIOLOGY

Detailed explanation-1: -Codominance. The correct option is B: Explanation of the correct answer: Codominance is the phenomenon where two alleles express themselves independently when present together.

Detailed explanation-2: -Codominance. In people, one codominant trait that you can’t really observe by looking at a person, but many people know about themselves, is blood type. People with the AB blood type have one A allele and one B allele. Because both alleles are expressed at the same time, their blood type is AB.

Detailed explanation-3: -IA, IB both are dominant forms so, person with ii allele have O blood group. Thus people with IAIA or IA i have blood group A and individuals having IBIB or IB i genotype have B blood group. Whereas person having genotype IAIB show phenotype AB and individuals with genotype ii have phenotype O [2].

Detailed explanation-4: -For simplicity, we can call these alleles A (for IA), B (for IB), and O (for i). Each of us has two ABO blood type alleles, because we each inherit one blood type allele from our biological mother and one from our biological father. A description of the pair of alleles in our DNA is called the genotype.

Detailed explanation-5: -This has implication when having children because, if both parents carry the IO allele, a child could be born with the genotype IOIO (blood group O), even though neither of the parents have this phonotype.