NEET BIOLOGY

Detailed explanation-1: -Individuals with IAIA or IAi have to type A blood, and individuals with IBIB or IBi have type B. IAIB people have both phenotypes because A and B express a special dominance relationship which is known as codominance. So, it means that type A and B parents can have an AB child.

Detailed explanation-2: -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-3: -The IAi genotype represents the blood group A and IBi represents the blood group B. According to the possible genotypes of the blood group represented in the cross, the blood group of the offspring can either be type A or type B only.

Detailed explanation-4: -If someone has blood type A, they must have at least one copy of the A allele, but they could have two copies. Their genotype is either AA or AO. Similarly, someone who is blood type B could have a genotype of either BB or BO. A blood test of either type AB or type O is more informative.

Detailed explanation-5: -The genotypes of a husband and wife are IAIB and IAi so the possible genotypes are IAi, IBi, IA IA, IA IB The phenotypes of these genotypes are-blood group A, blood group B and blood group AB.