NEET BIOLOGY

Detailed explanation-1: -Codominance occurs when both alleles show dominance, as in the case of the AB blood type (IA IB) in humans. Furthermore, the human ABO blood groups represent another deviation from Mendelian simplicity since there are more than two alleles (A, B, and O) for this particular trait.

Detailed explanation-2: -The ABO blood type is inherited in an autosomal codominant fashion. The A and B alleles are codominant, and the O allele is recessive.

Detailed explanation-3: -An excellent example of multiple allele inheritance is human blood type. Blood type exists as four possible phenotypes: A, B, AB, & O. There are 3 alleles for the gene that determines blood type. (Remember: You have just 2 of the 3 in your genotype—1 from mom & 1 from dad).

Detailed explanation-4: -Multiple alleles are non-mendelian inheritance patterns in which more than two alleles code for the same trait in a species. Multiple alleles can have more than two phenotypes. When numerous alleles are involved in the expression of a trait, a variety of dominance patterns emerge.

Detailed explanation-5: -Indeed, “codominance” is the specific term for a system in which an allele from each homozygote parent combines in the offspring, and the offspring simultaneously demonstrates both phenotypes. An example of codominance occurs in the human ABO blood group system.