Zoology - Principles of Inheritance and Variation Question with Solution | TestHub

ABO blood group system is example of multiple allelism in which 3 alleles are there to control the blood group. These 3 alleles are A (Dominant),$\mathrm{B}$(Dominant) and O (Recessive). This blood grouping has 4 types of phenotypes (as 4 blood groups) which are$\mathrm{A},\mathrm{ }\mathrm{B},\mathrm{ }\mathrm{O}$and$\mathrm{A}\mathrm{B}$. This grouping has total 6 types of genotypes which are$\mathrm{A}\mathrm{A},\mathrm{ }\mathrm{A}\mathrm{O},\mathrm{ }\mathrm{B}\mathrm{B},\mathrm{ }\mathrm{B}\mathrm{O},\mathrm{ }\mathrm{A}\mathrm{B}$and$\mathrm{O}\mathrm{O}$.