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Do fraternal twins have the same blood type?

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And since brothers and sisters can have different blood types, so too can fraternal twins. It is a different story if the twins are identical. Identical twins come from the same egg and the same sperm and so share nearly identical DNA. For identical twins to have different blood types, something needs to happen to one twin’s DNA. read more

Fraternal twins with different fathers are less likely to share a blood type, just as would appear with half-siblings. Then again, it is POSSIBLE for you to have the same blood type as your unrelated next door neighbor, but it is not likely. read more

Identical twins have identical dna. They come from the same egg cell and sperm cell. They should have the same ABO blood type. Fraternal twins are not identical. They are as different as ordinary siblings. They just happen to be born at the same time. They may or may not have the same blood type. read more

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