Blood Type Inheritance is a blood type determination tool for your child. This is based on the genetic inheritance of a blood type from a parent to a child.Blood Type describes the composition of a persons red blood cells. It is determined by co-dominant alleles. This is one of the forms in which our genetic information is present in our DNA. The three different alleles are A, B, O. Each of us has two different alleles as we inherit one from our mother and another from our father. This is known as a genotype. The Rh factor or Rhesus factor is also inherited from our biological parents but separate from the ABO maker. A person can be Rh Positive or Rh Negative. Blood Group usually refers to the ABO marker while the blood type refers to both the ABO and Rhesus Factor.