Blood Sample Mr. Hanson Mrs. Hanson Child 1 Child 2 Child 3 Jeff Martin Mrs. Hanson ABO Trait Type Antibody A Antigens Mr. Hanson Antibody B Antibodies Rh Trait Mrs. Hanson Blood Sample Mrs. Hanson Child 1 Child 2 Child 3 Rh or Antibody D Possible ABO Genotype(s) Possible Rh Genotype(s) Mr. Hanson