PATERNITY CAN BE RULED OUT BASED ON BLOOD TYPE MATCHING IN MANY CASES. ABO blood type calculator. ABO blood type calculator can be used to predict possibilities of paternity. The calculator is used to determine either: The ABO blood type of the child when the blood type of the mother and the father are known (top chart),.
Blood Type Genetic Basis:In genetics, blood type gene has two alleles, each allele has genotype A, B or O.The A and B are dominant, and O is recessive.