40% have blood group A, 11% blood group B and the remaining 4% have AB blood. Red blood cells in blood type AB have both antigens and those in blood type O have no antigen at all.īlood group O is the most common, with 45% of people in the US having this type. Red blood cells in blood type B have B antigens on their surfaces. Red blood cells in blood type A have A antigens on their surfaces.
The ABO system has four major blood groups: A, B, AB, and O. The type of antigens that your blood cells have determine what blood type you have.
There are three types of antigens that determine blood type – A type, B type and Rhesus (Rh). Red blood cells have substances on their surfaces called antigens. The function of these cells is to carry oxygen around the body, but they also determine what blood type you have, whether you are A positive or AB negative for example. Your blood contains a number of different types of cells, including red blood cells. Related: 7 Traits Babies Inherit From Their Mother What is Blood Type? There's no way to be sure what blood type your baby will have without a blood test, but you can narrow down the possibilities if you know your blood type and your partner's. You might be pondering the question: “What blood type will my baby have?”īlood type is inherited from both biological parents.