Probability of a Baby’s Blood Type
This calculates the probability of a baby’s blood type when born to Japanese parents.
Note: In extremely rare cases, there is a pattern called “cis AB type” in which the A and B genes are located on the same chromosome. This can result in a child with the O type being born to a parent who is AB type, or a child with the AB type being born to a parent with the O type.
- Japanese blood genotypes
- We calculate the probability of the baby’s blood type by factoring in the proportions of Japanese blood genotypes, in addition to the probability calculated based on the parents’ blood types.
- OO type... 29 %
- AA type... 8 %
- Type AO... 31 %
- Type BB... 3 %
- BO Type... 19 %
- AB Type... 10 %
*This site assumes no responsibility whatsoever for calculation results or other information. Additionally, we do not provide individual consultations.
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