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Blood Type Inheritance Calculator

This calculator determines possible parent blood groups based on a child's blood type. It helps explore the genetic inheritance patterns of ABO and Rh blood groups between parents and offspring.

Parent Blood Group Estimator

Input Fields

Blood Type Inheritance Logic

Formula
$$\text{Child’s blood type} = \text{Combination of parental alleles from ABO and Rh systems}$$

ABO System Genotypes:

  • A: AA or AO
  • B: BB or BO
  • AB: AB
  • O: OO

Rh System:

  • Rh⁺: ++ or +−
  • Rh⁻: −−

Based on these combinations, the calculator checks all possible parental genotypes that could result in the selected child’s blood group.


Blood type is determined by the ABO and Rh gene systems. This calculator uses the child’s blood group to predict potential blood types of the parents by analyzing all genetically valid allele combinations. It’s useful for educational purposes, biology studies, or simple curiosity about how traits are inherited. While it shows possible combinations, it cannot determine exact blood types of parents without more information.

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