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How to use Baby blood type predictor

Enter the father's and mother's blood types and click the "Baby blood type predictor" button to display the possible blood types and the probability of each.

You can also calculate more accurately by entering the blood types of your father's and mother's grandfathers and grandmothers.

The probability of the proportion of genes is calculated as type AA(8%), type AO(31%), type BB(3%), type BO(19%), type AB(10%), and type OO(29%).

The predicted probabilities of the father's, mother's, and baby's genes are also displayed based on the input information.

*As an exception, there are very rare cases where A and B genes are carried on the same chromosome called "Cis AB", and a child may be born with a blood type that would not normally be born.

ABO blood group system is a type of blood type classification system that has four types: A, B, AB, and O.

Blood type is determined by the combination of A, B, and O genes.

Each person has two of these genes, and blood type is determined by the combination of A, B, and O genes, as shown in the table below.

 Genotype Blood type AA AO BB BO AB OO Type A Type B Type AB Type O

As shown in this table, type AB and O are only AB and OO, there are two types of blood types A and B: AA and AO, and BB and BO.

A newborn baby receives one gene from each parent.

For example, the table below shows babies with type AB and AO.

A B
A AA AB
O AO BO

In this case, AA and AO are type A, so there are two ways, type AB is one way, and BO's type B is one way.

Therefore, the probability of being born with blood type A is 50%, and the probability of being born with blood types AB and B is 25% each.

When calculating blood type prediction, the probability is calculated based on the proportion of genes.

Blood type combination

This is a list of possible blood types for babies based on blood type combinations.

Type A Type B Type AB Type O
Type A A, O A, B, AB, O A, B, AB A, O
Type B AA A, B, AB, O A, B, AB B, O
Type AB A, B, AB A, B, AB A, B, AB A, B
Type O A, O A, O A, B O

This is a list of genotypes that a baby may receive depending on the combination of genotypes.

AA AO BB BO AB OO
AA AA AA,AO AB AO,AB AA,AB AO
AO AA,AO AA,AO,
OO
BO,AB AO,BO,
AB,OO
AA,AO,
BO,AB
AO,OO
BB AB BO,AB BB BB,BO BB,AB BO
BO AO,AB AO,BO,
AB,OO
BB,BO BB,BO,
OO
AO,BB,
BO,AB
BO,OO
AB AA,AB AA,AO,
BO,AB
BB,AB AO,BB,
BO,AB
AA,BB,
AB
AO,BO
OO AO AO,OO BO BO,OO AO,BO OO

Simple Calculator

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