The ABO blood types are examples of
The ABO blood type system in humans is an example of: a) multiple alleles and codominance. b) balanced polymorphism and codominance.c) codominance but not multiple alleles. d) balanced polymorphism but not codominance.e) multiple alleles but not codominance.Add your answer. Source.he ABO blood type system in humans is an example of: a) multiple alleles and codominance. b) balanced polymorphism and codominance. c) codominance but not multiple alleles. d) balanced polymorphism but not codominance. e) multiple alleles but not codominance. Add your answer. Source.