A complete blood type would describe a full set of 30 substances on the surface of red blood cells, and an individual's blood type is one of many possible combinations of blood-group antigens. Across the 36 blood groups, over 340 different blood-group antigens have been found. read more
Single genes with 2 alleles(Widow's Peak) , single genes with multiple alleles(Blood Type), and many genes(height). read more