The girls are the result of a very rare case of heteropaternal superfecundation, a topic already covered by Netflix in Brazil in a series with Juliana Paes
Libby and Zabrina shocked social media by posting that they are twin sisters from different fathers. Libby is of Asian descent and has brown hair and eyes, while her sister is white, blonde, and has blue eyes. Their pregnancy was a rare case of heteropaternal superfecundation.
According to a video posted on TikTok, the mother dated Libby’s father and then had a relationship with Zabrina’s father. After giving birth, the mother lost custody of her daughters, who stayed with their fathers, who decided to raise them as cousins.
When the girls turned 11, their parents revealed that they were twin sisters. “They didn’t think we could process the information and didn’t want to tell us as kids. Imagine having a cousin and then finding out they’re twins!” Libby said.
The couple said they never suspected anything, despite having the same birthday, because they are very different. They currently still live with their parents, but see each other often.
@zabibby Literally search for it if you don’t believe it #heteropaternalsuperfecundation #interacialtwins #twin #fypage ♬ original sound: Libby and Zabrina
Heteropaternal superfecundation
The subject was recently the subject of the series “Pedaço de Mim”, on Netflix, starring Juliana Paes. The actress gave life to Liana, a character who becomes pregnant with twins, children of two different men.
To understand the condition, the Earth you She spoke to the obstetrician gynecologist specialized in human reproduction, Waldemar Carvalho, who explained to her this type of extremely rare pregnancy in humans.
Curiosities about twin brothers: probability and characteristics
“It can happen when a woman who is ovulating has sex with different men in a short period of time. One egg is fertilized by one partner, the other by the next partner,” explains the expert.
The doctor says that some women may have a genetic predisposition to multiple ovulation, especially if there is a family history of twin pregnancies (non-identical or fraternal twins).
Currently, only about twenty cases are known in the world, according to a survey by the laboratory of the Genetics and Population Identification Group of the National University of Colombia.
It is important not to confuse a heteropaternal pregnancy with a fraternal twin pregnancy, also known as a fraternal twin. However, in both cases, the babies develop in different placentas. The doctor explains that situations like this are difficult to diagnose with imaging tests.
“The examination may raise some suspicions, for example, when one child grows more than the other. But even then this is not a determining factor, since it can also occur in a twin pregnancy with only one father. So during pregnancy there is no way to identify it,” says the midwife.
As for medical advances that allow the paternity of some children to be discovered during pregnancy, there are already DNA tests that can be performed from the ninth week of pregnancy. However, some doctors advise against it, as there is a risk of miscarriage, vaginal bleeding, uterine contractions, leakage of amniotic fluid, infection, failure of the procedure and transmission of infections.
Source: Terra
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