Periods and Conception
Fetal Development

Is it true that one twin can absorb the other twin and then have two different DNA types when it is born?


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2008-04-21 17:18:38
2008-04-21 17:18:38

I have no idea, but it was on CSI and they are known for being truthful so I'd say it's true, but very, very rare. Yes it is very true and very uncommon. If life teaches you anything let it teach you this: 'Nothing is impossible... just highly improbable at times.'

Yes, this can happen. People with two types of DNA are called chimeras after a mythical creature with a lion's head, a goat's body, and a serpent's tail (individuals are also called mosaics). These people have two different sets of DNA in different parts of the body.

There are 3 ways this can happen:

The absorbing the other twin.

When twins share a placenta and their blood ends up mixing.

The last one is more the people that are called mosaics where when the cells divide they don't make an exact copy of the DNA so some of the cells will be different.

It was on CSI and TLC did a special on it where the state was going to take the womans baby away because when they did the test she wasn't the paternal mother even though it really was her baby. Yes, it is called Vanishing Twins Syndrome. Either the other fetus or the mother reabsorbs the tissue from the "vanished" twin.


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No, the mothers and fetus blood supplies do not mix because some babies are born with different blood types to the mothers and mixing the two different blood types could be deadly to the baby.

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