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Can a woman be pregnant with twins by two different fathers

But that's what she got — along with two beautiful boys — when she gave birth to twins of different fathers nearly a year ago. They like to play with their older brothers. Their two dads How did it happen? Every month a woman's ovary releases one egg that can be fertilized by one sperm. But in this case, a pair of eggs emerged.

SEE VIDEO BY TOPIC: Mother Has Twins From Two Different Fathers

One set of twins – two fathers: how common is superfecundation?

We all know that siblings can have different fathers — technically making them half-siblings — but what about twins? Yes, it can happen. In fact, one study estimates that as many as 1 in sets of fraternal twins is "bipaternal. How is it possible? Simple: Two eggs from the same mother get fertilized by two different fathers — within the same ovulation period.

Okay, maybe not so simple. But if your head is spinning, consider that this happens in certain animal species all the time — with more than two fathers! Our canine friends are a clear example. Humans aren't dogs, of course, and most of the time, women ovulate only one healthy egg per cycle.

Fraternal twins occur when women ovulate two healthy eggs and both get fertilized. And every now and then, "superfecundation" happens: Two eggs are ovulated during the same cycle and fertilized at different points within the six-day fertility window , resulting in a bouncing pair of twins. When we see twins, we may assume that both eggs were fertilized during a single act of intercourse. But it's quite possible for one egg to be fertilized during one act of intercourse, and the other during another.

For example, consider a couple that has sex in the morning, followed by another round that evening. It's only logical, then, that when a woman has sex with more than one man while she's fertile, "heteropaternal superfecundation" can occur. That is, each egg can be fertilized by a different father. However, if you know twins who look nothing alike, don't assume that they have separate fathers. Like any siblings, twins who have the same father can look completely different from each other.

They may even appear to be of different races. The difference between identical and fraternal twins. American Academy of Pediatrics. Planning your pregnancy. American College of Obstetricians and Gynecologists. Fertility awareness-based methods of family planning. Multiples: When it's twins, triplets, or more. Multiple pregnancy and birth: Twins, triplets, and high-order multiples. American Society for Reproductive Medicine. James WH. The incidence of superfecundation and of double paternity in the general population.

Acta Geneticae Medicae et Gemellologiae 42 Stanford JB et al. Timing intercourse to achieve pregnancy: current evidence. Obstetrics and Gynecology 6 Evaluation of the menstrual cycle and timing of ovulation. Wenk RE et al. How frequent is heteropaternal superfecundation? Acta Geneticae Medicae et Gemellologiae 41 1 Wilcox AJ et al. Timing of sexual intercourse in relation to ovulation. The New England Journal of Medicine 23 The timing of the "fertile window" in the menstrual cycle: Day specific estimates from a prospective study.

BMJ Join now to personalize. By Evonne Lack. Photo credit: iStock. Show sources AAP. Featured video. Strange but true: Mixed-race twins, one black, one white. Strange but true: Getting pregnant when you're already pregnant. Meet the mom with two vaginas, two uteri, and yes — two periods a month. Strange but true: Semi-identical twins. Is it true that giving birth to twins runs in families? Strange but true: Vanishing twins. Strange but true: Some women have more than one uterus — and vagina.

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How can a set of twins have completely different fathers?

She is the first to admit her boys are like chalk and cheese. Cheeky Marcus, her son by Michael, is short and stout, red-haired with bundles of energy. His twin Lucas, her son by Tommy, is taller, blonde and has a more gentle, calm manner. We got on well and began to see each other. Worried she might jeopardise her fledgling relationship with Tommy, Charlotte kept quiet about what had happened.

Apr 16, Science and Technology. Paternity DNA testing for twins presents unique challenges that require attention to additional details. Before beginning the DNA testing process on twins who may have different fathers, there are several factors to consider.

We all know that siblings can have different fathers — technically making them half-siblings — but what about twins? Yes, it can happen. In fact, one study estimates that as many as 1 in sets of fraternal twins is "bipaternal. How is it possible? Simple: Two eggs from the same mother get fertilized by two different fathers — within the same ovulation period.

Chinese Woman Gives Birth to Twins with Different Fathers

Superfecundation is the fertilization of two or more ova from the same cycle by sperm from separate acts of sexual intercourse , which can lead to twin babies from two separate biological fathers. Homopaternal superfecundation refers to the fertilization of two separate ova from the same father, leading to fraternal twins ; [3] while heteropaternal superfecundation is referred to as a form of atypical twinning where, genetically, the twins are half siblings. Superfecundation, while rare, can occur through either a complex single occurrence of sexual intercourse, separate occurrences of sexual intercourse, or through artificial insemination. Superfecundation most commonly happens within hours or days of the first instance of fertilization with ova released during the same cycle. The time window when eggs are able to be fertilized is small. Sperm cells can live inside a female's body for three days. Once ovulation occurs, the egg remains viable for 12—48 hours before it begins to disintegrate. Thus, the fertile period can span five to seven days. Ovulation is usually suspended during pregnancy to prevent further ova becoming fertilized and to help increase the chances of a full-term pregnancy. However, if an ovum is released after the female was already impregnated when previously ovulating, a chance of a second pregnancy occurs, albeit at a different stage of development.

A Chinese woman just had twins with 2 different fathers — here’s how that’s possible

Twins occur when two babies are born to one mother after a single pregnancy. Each embryo then develops into a separate fetus. Fraternal dizygotic twins, meanwhile, occur when two separate eggs are fertilized by two separate sperm. Unless a set of twins' birth mother served as a surrogate or used donor eggs , there would be no question that she's the mother of both twins.

Siblings can have different fathers; can twins born of a woman have two fathers?

Yes they can. It sometimes happens in the lab when two different men's sperm are added to a dish with a woman's eggs. But it can happen in nature too. There it happens when a woman releases two eggs in a cycle.

Woman gives birth to twins with different fathers

Soon after the birth of her twin babies, a Chinese woman and her husband noticed something strange — the two babies looked pretty different, and only one resembled the husband. Following a DNA test, the couple learned that the babies were actually from two different fathers and the mother then revealed she had a previous one-night stand, Vice reported. Although cases like this are rare, they do happen. The phenomenon is known as heteropaternal superfecundation.

Images from Unsplash. Cheating on your husband and getting pregnant from it is bad enough as it is. But imagine your husband's child sharing a womb with that of your lover for nine months. To much disbelief, a woman in Xiamen City, China, has reportedly given birth to twins from separate fathers. Chinese news site Strait Herald was told about the occurrence by Ms Zhang, who is the director of the Fujian Zhengtai Forensic Identification Centre, the government agency which ran the paternity test for the twins.

Strange but true: Twins can have different fathers

C onstance Wu, of Crazy Rich Asians , is in talks to star in a new romcom. Apparently, her character is a bit ditzy — a classic romcom trope. But this ditziness will lead to what I am fairly sure will become a new romcom trope: heteropaternal superfecundation. He explains that heteropaternal superfecundation occurs when a woman gives birth to twins with different biological fathers. Once you can get past all the polysyllables, the romcom possibilities are endless: mistaken identity, twins who look comically different see Arnold Schwarzenegger and Danny DeVito in Twins , competing suitors. Although rare in humans, heteropaternal superfecundation is common in dogs, cats and cows, Carroll explains. That is one way to look at it. So how does superfecundation with multiple fathers happen at all?

My own twins (who look very different from each other) definitely have the same father; I can be, and am, % certain about that. But I have always thought that  4 answers.

But, for a woman in New Jersey suing for child support, things are a little more complicated. It turns out the man she thought was the father of her twins was only the father of one of the pair. Here are the different types of multiple births:. In this case, two different sperm impregnate two different eggs.

Is It Possible for Twins to Have Different Fathers?

A woman in China has reportedly given birth to a pair of twin boys found to have different fathers. It is said that the husband had felt strange as he thought one of the boys didn't look like him, and after they received the result, he had to question his wife over and over for her to tell the truth. A mother in China has given birth to a pair of twin boys from different fathers file photo. The story came to light when the couple, from south-eastern China's Xiamen city, had to register the birth of their twin sons at the local police station early last year, according to Xiamen-based newspaper Strait Herald.





Mother gives birth to twins with different dads


Twins from different fathers in one womb


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