Why give birth to a child and not a biological parent?

When you take any two cells in your body for genetic testing, they are more likely to have identical DNA. So there is no need to take time to do such nonsense, unless you encounter a situation called tetragametic chimerism.

In 2015, a 34-year-old American father and his wife gave birth to a son. But, DNA testing showed that he was not his biological father. The researchers found that the child turned out to be the son of his uncle's twin brother, but he was swallowed by his uncle's body when both were just fetuses in the womb.

This father met a rare condition known as chimerism . In the Greek legend, chimera refers to a monster half-way and half-way, such as a lion's head. In fact it is the case that two twin individuals exist in one body.

Illustrating the process of chimerism: The boy was born by a couple, but is the biological son of his uncle.This uncle, a twin fetus, was swallowed by his brother when he was still in the womb.

In June 2014, a couple gave birth to a son through the process of assisted reproduction. The boy was born healthy, but oddly enough, blood type was not suitable for both parents. A simple father test at home gave an explanation: the man is not the father of the child.

Concerned that the fertility support hospital was mistaken, the couple sent the blood test results, requesting an explanation. The hospital confirmed that the husband was the only white person who donated sperm at the hospital on the day their son was conceived, and the boy also had white skin.

At that time, the couple went to expert Starr - who suggested they perform a direct blood test. The results of these tests last year: The man and the child only have uncle-nephew relationship. The gene from his cheek cells is completely different from the genes in sperm.

Researchers believe that for every 8 born babies, one case in which a pregnant mother has started with multiple pregnancies. Then, a stronger fetal cell absorbs the twin fetal cells and takes it, bringing it into a part of its body. However, this condition is rarely detected through DNA tests.

26 years old (US) gave birth 3 times. When she applied for a monthly allowance to raise her child, she died when the court declared her boyfriend her father. And she, who gave birth to them, is not her mother, because her DNA does not coincide with them.

Lydia Fairchild will remember that day forever. The court staff called out to her suspiciously: "Who are you? What are you plotting with the children?" Surprised, Lydia answered "they are my children, why is there a plot here?" . The person replied coldly: "They are not your children. We tested DNA. Your DNA and the children are not the same."

From the court back, Lydia seemed to be going crazy. Apparently she was the mother of three children. She was pregnant and gave birth normally. All family members, neighbors and doctors at the maternity home know. Doubtful that the trial of the court was flawed, Lydia asked for a repeat test in several independent laboratories of her own choosing. The results are still the same, there are no errors. She, who was born, is not her mother.

Lydia Fairchild and her children.(Photo: Abcnews).

According to ABCnews, from just wanting to apply for a monthly social allowance to raise children, Lydia faces the risk of committing crimes. Dr. Leonard Dreisbach, obstetrician, who directly assisted Lydia with three deliveries, Lydia is the mother of all three children. He also said that Lydia's strange case certainly had some confusion in the DNA test results. He is also very willing to testify in court about this 'truth' . However, all failed before the DNA assessment.

In desperation, Lydia happened to believe another woman at the other end of the US had the same situation. It was Karen Keegan, a 52-year-old mother with two sons in Boston. The test before Karen's kidney transplant also showed that her DNA and the children were not the same. The doctors studied Karen's thyroid gland more closely, and the mystery was solved. Karen Keegan encountered a rare problem in medicine called chimerism.

In the case of Karen, the reason is that there are two fertilized eggs, when in the womb, should be developed into two twins, they "mix" together and become a perfect fetus. most have two different genetic codes - two different DNA sequences. In other words, Karen is two people in one body and that cannot be observed with the naked eye but can only be detected if genetic material is tested. That's why DNA throughout Karen is different from your DNA, but your thyroid DNA is the same.

Karen's story helps Lydia have a chance to convince the judge to give her more time. Finally, after a series of tests, the doctor concluded that Lydia was also a case of chimerism.

Taylor suffers from chimerism, which causes the body to have two colors.

Later, many cases were more known to chimerism. Recently, the situation of chimerism also makes the body of 33-year-old Taylor Muhl (America) strange changes. According to Deccanchronicle, Taylor always suspected that she had a twin and never thought that the birthmark on her abdomen was the sign that her twin sister had combined with her body. The girl actually absorbed her twin brother right in her mother's womb. Later, she was newly diagnosed with a rare condition called chimerism.

This situation makes all parts of Taylor's left body part larger than the right, even she has 2 immune systems and 2 blood lines. In particular, the young girl's body is divided into 2 skin colors. In addition, she always suffered from illness, often suffered, and.

" The chimera phenomenon in humans is very common but extremely difficult to identify and reveal only light in very random situations," said biologist Charles Boklage from East Carolina University. It is estimated that only 100 people in the world suffer from this disease.