is it possible for twins to have two different fathers?
no, twins cannot be born of two different fathers.
i cannot give you the scientific explaination right now but i will post it tomorrow.
yes, there have been a few reports of twins from different fathers.
the most outspoken one is of a twin: one black, one white. The mother apparantly was raped by a black guy, and later also had sex with her normal partner. Both fertilized her, and as a result one was a black kid, the other white
wait, did she sleep with her husband right after getting raped, coz don't they gotta be fertilized at the same time?
BS
Sara518: the second coitus need not take place immediately afterwards....it can be about 5 days later as well
Furqan: since you don't believe it, here is a reference. (one out of many):
*
Fertil Steril. 1997 Jun;67(6):1159-61.
Indisputable double paternity in dizygous twins. - Girela E, Lorente JA, Alvarez JC, Rodrigo MD, Lorente M, Villanueva E.
OBJECTIVE: To report a case of heteropaternal superfecundation.
PATIENT(S): Father, mother, and a set of twins.
INTERVENTION(S): Blood typing conventional markers, as well as polymerase chain reaction loci and restriction fragment length polymorphism loci of DNA.
MAIN OUTCOME MEASURE(S): Heteropaternal superfecundation was demonstrated after paternity investigation.
RESULT(S): The probability of paternity for twin 1 was 99.9999998%, whereas that for twin 2 was excluded on the basis of the following tests: Fy, Pi, human leukocyte antigen (HLA)-DQA1, D1S80, D17S5, HBGG, D5S110, D2S44, and D10S28.
CONCLUSION(S): Dizygous twins can have different biologic fathers, as demonstrated in this case. According to published data, the frequency of twins with different fathers is probably underestimated, at least in small selected populations such as those of paternity suits.*
Okay so the second fertilization took place about 5 days later? If that's the case then the she must've ovulated more than 2 eggs, but even then isn't an egg viable for about 24 hrs after ovulation, after which it starts to deteriorate? The first egg wouldn't be fertilizable after 5 days, because it'd already have started cell division etc and be onto implantation, plus block to polyspermy happens immediately after the first sperm penetrates.
p.s. I'm not saying it couldn't have happened, I'd just like to get to the bottom of how did it happen and what were the underlying mechanism by which it did.
[QUOTE]
*Originally posted by NeSCio: *
yes, there have been a few reports of twins from different fathers.
the most outspoken one is of a twin: one black, one white. The mother apparantly was raped by a black guy, and later also had sex with her normal partner. Both fertilized her, and as a result one was a black kid, the other white
[/QUOTE]
Yes i have seen the picture of this. I dont know about the whole story about rapa, but when i was in OB/GYN rotations our attending showed us the picture.
Its possible but not very probable.
bs
nescio is a doc who is posting info from his med training and not a story from national enquirer.
so call it BS, but thats what they article is stating.
Those who doubt such facts, are probably unaware that sperms with male chromosomes travel much faster from vagina to the egg, as compared to sperm carrying female chromosome. Typically male sperm can travel the whole distance in 2+ hours, while female sperm can take 2+ days.
Once the sperms get to the egg, then whichever fertilizes first determines the genes/gender of the baby. So, considering how fraternal twins are born through fertilization of two different eggs, it is quite possible to have two different fathers.
Though, for obvious reasons, it is very rare (a woman to have two eggs AND for her have sex with two partners right around the time of ovulation).
This is weird...
now this is INTERESTING stuff they didnt teach us in school ;)
lussi, u Xpanded my horizons...:)
interesting stuff .....