ABO blood groups is determined by three different alleles. How many genotypes and phenotypes are possible?

Question

ABO blood groups is determined by three different alleles. How many genotypes and phenotypes are possible? (A) Genotype - 3, Phenotype - 1 (B) Genotype - 6, Phenotype - 4 (C) Genotype- 4, Phenotype - 6 (D) Genotype- 9, Phenotype - 7

Tardigrade Admin · Accepted Answer

The three alleles IA, IB and i of gene I in ABO blood group system can produce six different genotypes and four different phenotypes as shown below: <img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/biology/50402f1b1a4e77710cd7dc433d3b827c-.png" />

Q. ABO blood groups is determined by three different alleles. How many genotypes and phenotypes are possible?

Genotype - 3, Phenotype - 1

Genotype - 6, Phenotype - 4

Genotype- 4, Phenotype - 6

Genotype- 9, Phenotype - 7

Genotype- 2, Phenotype - 1

The three alleles $I^{A}, I^{B}$ and $i$ of gene $I$ in ABO blood group system can produce six different genotypes and four different phenotypes as shown below :