Blood Type Inheritance
Free online tool to quickly check possible blood types of offspring.
Tool Guide
Introduction to the Online Blood Type Inheritance Quick Reference Chart
The Online Blood Type Inheritance Quick Reference Chart lets you quickly see the possible and impossible blood types of children based on the parents' blood types.
Based on the ABO blood group inheritance rules and Mendelian genetics, this tool helps users intuitively understand the scientific rules of blood type inheritance. It is suitable for medical study, genetic research, parent-child blood type matching analysis, and other scenarios.
To enter the parents' blood types and calculate the possible blood types of their children, use the Online Blood Type Calculator.
How to Use the Blood Type Inheritance Quick Reference Chart
Select the parents' blood types: In the tool, select the row for both parents' blood types (A, B, O, AB).
View the results: Compare against the reference table to see the possible blood types of the children, clearly identifying which are heritable and which are impossible.
Basic Knowledge of Blood Type Inheritance
ABO blood group inheritance rules: Blood type is determined by three alleles—A, B, and O—and a child's blood type is influenced by the combination of the parents' genes.
Common blood type combinations and children's blood type possibilities:
A + A → A / O
A + B → A / B / AB / O
A + O → A / O
B + B → B / O
B + O → B / O
AB + A → A / B / AB
AB + B → A / B / AB
AB + O → A / B
AB + AB → A / B / AB
O + O → O
Frequently Asked Questions About Parent-Child Blood Type Matching (FAQ)
Is the blood type inheritance calculation accurate?
This tool calculates based on the ABO blood group inheritance rules and is suitable for conventional blood type estimation, but certain special cases (such as rare gene mutations) may affect the results.
Why can't AB-type parents have O-type children?
AB-type parents do not carry the O gene, so they cannot pass on type O blood.
If the parents have the same blood type, will the children definitely have the same blood type?
Not necessarily. For example, two type A parents can have type O children, because type A may carry the O gene.
Does this tool apply to Rh positive/negative?
This tool mainly calculates ABO blood type inheritance and does not currently support Rh positive/negative blood type calculation.
Can the results be used for medical identification?
This tool is for reference only. Actual situations may be affected by other genetic factors. For medical identification, please consult a professional doctor.
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