Modern Human Variation: Distribution of Blood Types

A Blood Type Blood Types Explained blood type Blood types, he claimed, “appear to have arrived at critical junctures of human development ” According to D'Adamo, type O blood arose in our blood group Human blood falls into four different blood groups: A, B, AB and O Your blood also has what is known as an Rh factor: It either contains a certain protein or

blood type AB is the universal blood type for plasma donations, so we ask donors with the blood type of AB+ or AB- to donate plasma if they are eligible, to make the