Girls born with nearly 100% genes from their father and that is not a blessing!

Usually, the gene allocation rate is 50:50. Cases of this deviation are very rare, only 25 people in the world encounter it.

In the Vietnamese folklore, the phrase "birth hire" is sometimes used to refer to a woman whose child was born exactly like her husband, without any features of her. Of course, that was just a joke.

But what if the child was born not only with the same strokes, but what about all of the genes were taken from the father? Recently, an 11-year-old girl was identified in the Czech Republic carrying the gene set, and it can be said to be the most rare case on Earth .

This girl was born with a genome that was almost taken from her father.(Illustration)

Specifically, this girl was born with a genome that was almost taken from her father , instead of both parents as usual. Until now, only 25 people in the world (both female) have been confirmed to have this strange gene phenomenon.

More specifically, Czech girls are the first to have it without cancer.

"About 10 - 15 years ago, we did not think this phenomenon could be suitable for humans to survive" - quoted Jennifer Kalish, a genetic expert in Philadelphia (USA).

Kalish owns a laboratory, specializing in cases of gene duplication errors." This gene duplication phenomenon is not common," she said. However, thanks to advances in medicine, cases of gene errors today appear more frequently.

Just like the case of the Czech little girl. Her parents wanted to find out why she was deaf, so she sent her to the hospital. By age 9, tests showed that she had two copies of a super rare gene.

At first, the scientific world thought that she was too unfortunate, when she received rare genes twice from her parents. But it turns out, the mother doesn't have that gene, it's just from the father.

Nearly all of the father's genes have been copied into her cells.

And according to Irena Borgulová from the Prague Center for Genetic Medicine (Czech Republic), subsequent studies show that what is copied is not just a rare gene. Nearly all of the father's genes have been copied into her cells.

This is not the same as the "twin" mechanism, which is called " genetic mosaic". She still has some differences, such as 7% of blood cells are from the mother. and 26% of saliva cells are also from the mother.

Why does it happen?

Usually when sperm and eggs meet, they release and exchange genes, then form zygotes. But in the case of this girl it is not like that. On the other hand, the sperm has cloned itself, dismissing the mother's gene and forming a complete set of 23 chromosomes only from the father.

It is estimated that the usual gene repetition rate is 1: 10,000 cases. But if you repeat the whole gene like a Czech girl, that ratio is even rarer.

What does this genome mean?

The meaning of this rare genome is more harmful than good. At age 11, one of her legs is longer and more muscular. According to Borgulová's study, it is a very clear sign of this phenomenon, because one leg has more father genes.

In addition, in 25 similar cases, due to gene duplication, the incidence of cancer is also doubled. Fortunately, this girl has not been, or has not been.

And paradoxically, the cause of her deafness is not a repeat of the gene, because there are no similar cases.