Twins DNA

[Oatso]

I remember watching Trisha a while ago and there was a girl (chav, obviously) who was pregnant, but she had slept with the guys brother. So both brothers were on having a DNA test to see who's the baby was.

Then I got thinking...if the brothers had been identical twins, then they would have had the same DNA wouldn't they? So does that mean that they would never be able to who was the actual biological father is?

[mullein3]

everyone has different dna..each dna sample is exclusive to that person..they may have similar dna but their would still be a difference..

[jake-the-peg]

Don't think that's quite true mullein.

Identical twins are formed when a fertillised egg splits. They have identical DNA.

As individuals they can be different in things like fingerprints but their DNA is the same.

So I think Oatso is right they couldn't tell the father if they'd been identical twins

[Loosehead]

Correct, can't tell. I suppose they are both the biological father but only one of them assisted in the conception.

[morg_monster]

My grandmother was an identical twin, and my dad always talks about how his cousins (the children of his mother's twin) are biologically half-siblings to him, rather than cousins, because grandma and twin had identical DNA.

Of course I don't know if they could test for genuine identical-ness back then, but certainly they looked the same by all accounts. My dad and his sisters are certainly quite similar in looks to their cousins, more than you might expect.

Also, there was an mag advert for an artificial sweetener years and years ago, it had a picture of identical twin ladies and identical twin men who apparently married each other, the women were both pregnant. It said that the babies would be genetically siblings.