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

Rh antigen follows normal Mendelian inheritance. If 'R' is the allele which produces Rhesus antigen and 'r' is the allele which doesn't, then a person with Rh+ve blood group can be RR or Rr while a person with Rh-ve blood group will always be rr (always homozygous). Person with A blood group may have genotype I^AI^Aor I^AI^O. A person with AB blood group has genotype I^AI^B. A person with blood group O has genotype I^OI^O(always homozygous)

If the person is heterozygous for both blood group systems, genotype should be I^AI^BRr (AB Rh+ve child)