Blood Type Chart

Calculate possible blood types based on parents

Blood Type Heredity Chart

Parent Blood Types	Possible Child Blood Types	Impossible Child Blood Types
O + O	O	A , B , AB
O + A	A , O	B , AB
O + B	B , O	A , AB
O + AB	A , B	O , AB
A + A	A , O	AB , B
A + B	AB , A , B , O
A + AB	A , B , AB	O
B + B	B , O	A , AB
B + AB	A , B , AB	O
AB + AB	A , B , AB	O

Blood type inheritance follows Mendelian genetics. The ABO blood type system is controlled by three alleles: A, B, and O.

This tool calculates possible blood types of children based on parents' blood types. Results are for reference only; actual blood types should be confirmed through medical testing.

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