In the ABO blood system, what genotypes do two parents need to have in order to be able to produce children with all the possible ABO blood types. Please select all that apply.

Question

Quizplus · Accepted Answer

For all four blood types (A, B, AB, and O) to be possible in offspring, all three alleles (I^A, I^B, and i) must be present in the two parents. As the genotype for O must be ii, each of the parents must carry at least one i allele. In order to be able to produce AB offspring, the parents must each carry one of the I^AorI^Ballele. Therefore, the parental phenotypes must be I^Ai and I^Bi, as shown in the Punnett square below: 11edbe74_caa0_4c64_94f6_b3c9382d3010_TBO1157_00

In the ABO Blood System, What Genotypes Do Two Parents