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Can twins have two different fathers?

Is it possible to have twins with two different fathers?

A 19-year-old girl became pregnant with twins and after giving birth she found out that her children had different fathers.

Twins with two different fathers

The strange case was registered in the town of Mineiros, in the Brazilian state of Goiás. This phenomenon, considered extremely rare, is known as heteropaternal superfecundation and was confirmed after performing DNA tests. 

After collecting the necessary material for the test, the DNA results surprisingly only came back positive for one of the two children. “I didn’t know this could happen. They are very similar,” the woman told Globo.

At that moment, the mother remembered that she had had sex with another man on the same day as the one she thought was the father of her children, so she asked that person to take a DNA test.

The second man agreed to take the test and the results were conspicuously positive, but for the other baby . For the doctor Jorge Franco, it is a rare case of “heteropaternal superfecundation”.

“It is possible that it happens when two eggs from the same mother are fertilized by different men. The babies share the genetic material of the mother, but they grow in different placentas,” Franco said in a conversation with Globo.

The professional also recalled that there were only 20 cases like this in the world.

When did this curious fact happen?

Curious took place in Brazil in the year 2021, and the twins are currently 16 months old. One of the twins lives with the mother and the other with the father of one of them. On the other hand, expert Jorge Franco considers this case to be extremely rare, as it is known as heteropatternal superfecundation.

The woman’s physician, Dr. Tulio Franco, said this is possible when two eggs from the same mother are fertilized by different males. The doctor said that the children have the same genetic structure as their mother. He said he had never in his lifetime anticipated seeing a situation like this, with only 20 other incidents occurring around the world.

“It is possible that this happens when two eggs from the same mother are fertilized by different males. The babies share the mother’s genetic material, but they grow in separate placentas,” Franco told local media. Told. “There are hardly 20 registered cases in the world with this type of pregnancy. It is extremely rare, as it happens once in a million. I never thought I would see such a case in my life,” said the health expert .

In the end, even if the twins have different fathers, only one of them will be listed on the birth certificate as the father of both. “He takes care of both of them. He helps me a lot and gives them all the help they need,” said the girl about her partner.

What is Superfertilization?

While the occurrence is extremely rare, it is not completely impossible. Scientifically, it is named as heteroparental superfecundation. The young mother said she was stunned when a DNA test of the man she believed to be the father came back positive for only one child. What is surprising is that the teenager said that the babies look very similar despite being conceived by two different men and born in the same delivery.

According to reports, there are only 20 other heterosexual superfecundations. cases in the world. The children are now 16 months old and the young mother said that a father is taking care of them.

Although this fact may seem unbelievable, it is not something impossible. It also has a scientific name: superfecundation. It occurs when two or more eggs of the same menstrual cycle are fertilized by sperms of different sexual functions.

“Babies share the mother’s genetic material, but grow in separate placentas,” said the mother’s personal physician, Dr. Tulio Jorge Franco said. She confirmed that she never thought in her professional career that she would one day see a case of superfecundation, as there are only about 20 cases recorded in the world.

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