🏥Blood Type Calculator

Calculate the possible blood types of your child based on parents' genetics. Interactive ABO and Rh factor inheritance calculator with visual Punnett square analysis.

🤔 What Is Blood Type Genetics?

Think of blood type inheritance like mixing paint colors from your parents - that's how ABO and Rh genes combine to determine your child's blood type! Our calculator uses Punnett square logic to show all possible blood type outcomes. Educational, accurate, and easy to understand!

👩 Mother's Blood Type

ABO Blood Group

Rh Factor

Select blood type

👨 Father's Blood Type

ABO Blood Group

Rh Factor

Select blood type

Child's Possible Blood Types

Based on genetic inheritance patterns

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Important Note

These are theoretical probabilities based on Mendelian genetics. Actual inheritance can be affected by rare genetic variations.

ABO Inheritance Punnett Square

Rh Factor Inheritance

Understanding Blood Type Inheritance

Blood type is determined by alleles inherited from both parents. Here's how the genetics work:

A Allele

Dominant over O. Produces A antigens on red blood cells.

B Allele

Dominant over O. Produces B antigens on red blood cells.

O Allele

Recessive. Produces no antigens on red blood cells.

Rh+ Allele

Dominant. Produces Rh factor protein on red blood cells.

Rh- Allele

Recessive. Does not produce Rh factor protein.

🧪 Common Blood Type Combinations

A+ × B+ Parents

Can produce children with A, B, AB, or O blood types

O+ × O+ Parents

All children will have O blood type

AB+ × O- Parents

Children can have A or B blood types

A- × A- Parents

Children can have A or O blood types, all Rh-negative

B+ × AB- Parents

Children can have A, B, or AB blood types

AB+ × AB+ Parents

Children can have A, B, or AB blood types

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