can you get pregnant with twins from 2 different guys?
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It is possible for twins to have different fathers in a phenomenon called heteropaternal superfecundation, which occurs when two of a woman's eggs are fertilized by sperm from two different men. Ordinarily, a woman becomes pregnant because one of her eggs has been fertilized by sperm.
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IUI itself isn't associated with an increased risk of a multiple pregnancy — twins, triplets or more. But, when coordinated with ovulation-inducing medications, the risk of a multiple pregnancy increases significantly.
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Fraternal twins can be either two girls, two boys, or one of each. These are the possible sex combinations: A set of boy/girl twins: Can only be fraternal (dizygotic), as boy/girl twins cannot be identical (monozygotic)
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Among monozygotic twins, in extremely rare cases, twins have been born with different sexes (one male, one female). ... Another abnormality that can result in monozygotic twins of different sexes is if the egg is fertilized by a male sperm but during cell division only the X chromosome is duplicated.
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While IUI alone will not increase the risk of twins, the use of fertility medication does make it more likely that patients will have a multiples pregnancy. If a woman releases multiple mature eggs at ovulation, it is more likely that more than one egg will be fertilized, thus resulting in twins or multiples.
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However, since only women ovulate, the connection is only valid on the mother's side of the family. While men can carry the gene and pass it on to their daughters, a family history of twins doesn't make them any more likely to have twins themselves.
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The Times said the phenomenon of twins or triplets having different fathers can occur when a woman, having ovulated at least twice in the same cycle, sleeps with more than one man within 24 hours and conceives children by them. ... The children, one of whom died after an illness in 2001, are now 10.
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Non-identical (dizygotic) twins happen when 2 separate eggs are fertilised and then implant into the woman's womb (uterus). These non-identical twins are no more alike than any other 2 siblings. Non-identical twins are more common. The babies may be of the same sex or different sexes.
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Quadruple surprise: Mother pregnant with two sets of identical twins. A husband and wife in Utah just found out they're about to be parents of quadruplets. Even more rare, the babies are two sets of identical twins. ... Ashley and Tyson Gardner told CNN they've tried unsuccessfully for eight years to get pregnant.
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There are two ways that a woman may conceive twins. In one case, her ovaries release two eggs at the time of ovulation, and both are fertilized and become embryos; this results in fraternal, or nonidentical, twins. In contrast, identical twins are conceived when one embryo splits into two early in its development.
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These twins can be the same or different sexes and are no more alike than any brother or sister, despite being born together. In this case of semi-identical, or sesquizygotic, twins, the egg is thought to have been fertilised simultaneously by two sperm before it divided.
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Yes, it's possible for men to become pregnant and give birth to children of their own. In fact, it's probably a lot more common than you might think. In order to explain, we'll need to break down some common misconceptions about how we understand the term “man.”
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It is possible for twins to have different fathers in a phenomenon called heteropaternal superfecundation, which occurs when two of a woman's eggs are fertilized by sperm from two different men. ... Identical twins occur if that fertilized egg divides into two separate eggs, early in the pregnancy.
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Twins being born with different fathers is an extremely rare occurrence known as heteropaternal superfecundation. Women usually have to have sex with two different men within a day before or after ovulation for both eggs to be fertilised.
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Identical twins are either both male or both female so cannot conceive a child together except by some dramatic genetic engineering. Even if two female identical twins had children by the same father their children would not be completely genetically identical.
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Women who are multiples themselves might carry a gene for hyperovulation (meaning that they release more than one egg during an ovulation cycle). Hyperovulation increases the ability to conceive fraternal twins. 5﻿ The chances of twins might be as high as 1 in 17 if the mother is a fraternal twin.
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Having identical twins is not genetic. ... However, for a given pregnancy, only the mother's genetics matter. Fraternal twins happen when two eggs are simultaneously fertilized instead of just one. A father's genes can't make a woman release two eggs.