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| Twins in Vietnam discovered to have different fathers after DNA test | Twins in Vietnam discovered to have different fathers after DNA test |
| (about 1 hour later) | |
| A pair of twins has been discovered to have different fathers, after the dissimilarity between the children prompted their parents to take DNA tests. | A pair of twins has been discovered to have different fathers, after the dissimilarity between the children prompted their parents to take DNA tests. |
| The children, from Vietnam's northern Hoa Binh province, are two-years-old and distinctive by one having thick, wavy hair, while the other has thin, straight hair. | |
| Both the mother and father took DNA tests as it had been feared they may have been given the wrong baby at the hospital, reports Viet Nam News. | Both the mother and father took DNA tests as it had been feared they may have been given the wrong baby at the hospital, reports Viet Nam News. |
| The tests, carried out by the Hanoi Centre for Genetic Analysis and Technology, proved that the twins both belonged to the mother. | |
| The 34-year-old husband was found to be the father of only one of the twins, making the children bipaternal. | The 34-year-old husband was found to be the father of only one of the twins, making the children bipaternal. |
| Bipaternal twins are extremely rare and this is reportedly the first case to be recorded in Vietnam. | Bipaternal twins are extremely rare and this is reportedly the first case to be recorded in Vietnam. |
| Dr Keith Eddleman, director of obstetrics at Mount Sinai Hospital in New York told CNN that it is possible for a woman to conceive bipaternal twins through two acts of sexual intercourse. | Dr Keith Eddleman, director of obstetrics at Mount Sinai Hospital in New York told CNN that it is possible for a woman to conceive bipaternal twins through two acts of sexual intercourse. |
| A woman’s egg has a life-span of between 12 and 48 hours, he said, while a sperm can last for between seven and 10 days. It is during this overlap that it is possible for two eggs to be fertilised. | A woman’s egg has a life-span of between 12 and 48 hours, he said, while a sperm can last for between seven and 10 days. It is during this overlap that it is possible for two eggs to be fertilised. |