The answer to the classic question, “Who’s your Daddy?” may never be known, even with DNA sampling, because the mother had sex with both twin brothers.
I feel bad for the little kid, as the adults in his life aren’t exactly behaving in exemplary fashion.
From the article: “One of the twins, who cannot be named for legal reasons, went to court last summer in the hope of forcing the mother to grant him access to the child. Although his name is not on the birth certificate, he claims he is the only father the boy has known, cared for him every other weekend, provided financial support and was even known to him as ‘papa’.”
The circumstances may be less than ideal, especially since both brothers knew the other was sleeping with the woman, but it sounds like this guy is trying to do the right thing.
Since the twin that already knows and is in contact with the kid is the one who wants to be named as the father, and the twin that doesn’t do or want any of these things already has a family of his own and doesn’t want to be involved, I just don’t understand why this is an issue.
It seems obvious who already is functionally the father and who should gain that legal designation.
Regardless of whose sperm got there first, they are both the genetic equivalent of the kids father and they both equally responsible for engaging in acts likely to cause pregnancy. In this situation, where the paternity is tossup between two equally likely men, seems to me the best choice is to pick the man who has acted the most like a father to the child.
If they’ve been helping equally and both want to act as the kid’s father… well… I guess the kid has two dads. 
According to selfish gene theory, even the twin that’s not the true father has an interest in the kid’s future. Those are still his genes, even if he wasn’t the agent of delivery. Kind of like artificial insemination, except up close and personal.
Well the article did say that twins are actually slightly genetically different due to mutations during embryonic development. But it does remind me of that GQ a while back that asked if two sets of twins had kids together would the kids be siblings or cousins or both?
Sounds like a seminal discussion. Shoot us a link, won’t you?
Mmmm…sex with twins…
Huh? Oh sorry, carry on.
An issue which straight men and gay men can unite upon as a good thing. 
Unless they’re not of the same gender, of course.
An issue which straight men and gay men and bisexual men can unite upon as a good thing, with the appropriate set of twins.
Better?
As a twin myself, I must step up and represent other male twins on this board and demand that my brother share all hot chicks he screws.
That is all.
The mother does not want the either to have access. It is more difficult for a non-bio-dad to get access than a bio-dad. The mother is asserting that the brother who does not want access is the father, and the brother who wants access is not the father. She is fighting an uphill battle, for regardless of who was the bio-dad, the brother who wants access had in fact acted in the role of a parent, and will have a run at access on those grounds.
If you are interetested, the law that applies is in the Quebec Civil Code, Title II, Chapter I, Division I and Division II: http://www.canlii.org/sino/disp.pl/qc/laws/sta/ccq/20041104/part1.html
Ah, yes … “My Two Dads.” A dumb sitcom featuring a pre-“Mad About You” Paul Reiser and a post-“B.J. and the Bear” Greg Evigan that staggered along for three seasons. I guess if they wanted to relaunch the concept in the age of rampant DNA testing, sex with twins would be the way to go.
In my town there were two well known couples who ran, until they retired, the last small family grocery store here. I shopped there in the late 70’s. It was a case where identical twin brothers married identical twin sisters. They even lived in a big duplex style house, each couple occupying one side of it. When siblings marry siblings the kids are cousins, although referred to as “double” first cousins. My grandmother had a number of those, as in her parent’s generation two brothers and a sister married two sisters and a brother. None of those were identical however.
Baker, that’s gotta be an interesting family reunion.
And straight women. Two words: Cingular Triplets.
I have two cousins who married, whose mothers were identical twins, making them genetic half-siblings.
They lead dull, normal lives and have three dull, normal children.
No way! They’re mine! I saw 'em first!