Do you know? Japanese Emperor From the 17th to the 44th generation, 22 people were offspring from blood marriage.
So we can hardly see their silhouettes in the photos, because almost every Japanese royal family has a common flaw: hunchback.
Whenever they appear in front of the camera, government personnel will seriously explain that they are not allowed to take pictures from the side.
This is strange. Although they know that inbreeding may cause the next generation to have abnormalities, premature birth or even premature death, why do they all choose to get married in kin? What are the dangers of inbreeding?
Why is inbreeding very harmful?
Until the 21st century, There are also some developed countries that legally allow close relatives to get married. For example, the Swedish government allows half- or half-siblings to submit marriage applications. Some remote prefectures and cities in the United States and Japan also assume that cousins can get married , in order to promote personal freedom and freedom of marriage.
From a genetic biology perspective, the offspring of inbreeding does have fatal health risks . This is because everyone carries some recessive alleles, ranging from a few to a few dozen.
When a man and a woman with similar blood ties get married, the harmful recessive allele inherited from the same or similar ancestors increases the probability of overlap. According to the law of chromosomal recessive inheritance, the child born is more likely to be genetic mutations, deterioration of functions or physical deformities.
Similarly, it is almost unlikely that two people who are completely unrelated to each other have two recessive alleles. In contrast, the probability of inbreeding offspring suffering from genetic diseases is hundreds of times higher than that of children from ordinary families.
It is worth noting that when the pathogenic gene is linked to X recessive inheritance of , the probability of offspring deformity is lower. Because men can only get half of the homozygous genotype from the previous generation. In other words, in this case, is combined with the child of the uncle or aunt, and the probability of genetic disease is higher. However, if you marry your aunt's cousin, the probability of genetic disease in the next generation is much lower.
The famous musician Bach is married to his aunt's daughter Maria. The offspring of has almost no genetic diseases and has inherited valuable musical talent.
The harm of inbreeding: genetic diseases
However, examples like musician Bach are only a very small number. Both men and women with similar blood ties have up to 75% of the pathogenic genes for marriage and childbirth. What are the specific harms of inbreeding and what diseases will be produced?
Brain scientist Oliver once came to a small island along the Western Pacific coast for research. found that 30% of the people on the island were completely color blind. Because the eyeballs lacked cone cells , they could only see three colors: gray, black and white!
Oliver conducted another series of experiments, believing that this is highly likely because of inbreeding, because there were only 21 people who came to this isolated island at first, and the recessive completely blind gene of has been passed down from generation to generation. The combination of the two recessive genes shows the symptoms of color blindness .
UK Queen Victoria After marrying his cousin, inherited hemophilia has affected at most 6 generations. In almost 300 years, European royal families have suffered from hemophilia .
According to statistics, in remote areas of some countries, the probability of being separated from the outside world due to their backward geographical and cultural background is 1.2%, which is 0.5% higher than that of ordinary cities.
The risk of premature death is high
The offspring of intimate relatives who have married and given birth may even be a hurdle for safe birth. They have a very high probability of stillbirth or die early at a young age. According to relevant statistics, the dementia born to cousins after marriage is 150 times higher than that of ordinary marriages, and the deformity and mortality rate of infants and young children is more than three times higher.
There are also scholars to follow up and investigate, and found that inbreeding children died as high as 13.9% before the age of 20, and the number of is significantly higher than the survival rate of normal offspring.
The world-renowned biologist Darwin , once married his cousin Emma. Among the 10 children born, there are as many as 3 young children who die young.
A 94-year-old mother in remote areas of western my country. When she was young, she gave birth to eight children after marrying her cousin. One of them died just a few days after giving birth. There are three more people with mental retardation and slow development. When they see people, they will shrink their necks and are jokingly called "monkey babies" by the villagers. only 4 children are in good health and perform normally.
Even if you survive by chance, may carry some recessive genetic diseases in the gene. When you give birth to the next generation in adulthood, there is a certain probability that it will be converted into dominant pathogenic genes. will give birth to children with genetic diseases, such as short stature, poor development, intellectual problems, etc.
is born stupid and deformed
Among the many possible diseases, the most common thing about is mental retardation visible to the naked eye, and the response to external stimulation is obviously not as sensitive as normal children. thinking and learning ability are much worse, and it is far from keeping up with the curriculum rhythm of ordinary schools. In terms of physical development, children born to in-kins also have obvious defects in their physical functions, such as unstable walking, short height, more fingers or less fingers, etc., also makes them more susceptible to bullying than normal children.
What few people know is that after Einstein got married to her cousin, the children born to have suffered from schizophrenia to varying degrees since childhood. and there is no way to cure it even after going through several hospitals.
Ecuador live a group of Awuka people. They cannot communicate because of their language and the outside world, and can only marry and breed offspring with people of their own tribe, which allows a large number of pathogenic genes to be passed on to offspring. Hundreds of years have passed, and this race is almost extinct now.
There have been cases of deformed children born in close relatives and marriages in the country. A cousin from Chongming Island, Shanghai gave birth to a daughter after getting married. As a result, he only grew 1 meter until he was 18 years old and weighed only 26 kilograms. cannot take care of themselves and relying on their parents to take care of them may become a burden for them for the rest of their lives.
It has to be said that children born by inbreeding are subject to unfair treatment.
Why does Japan insist on inbreeding?
Since the mortality and deformity rate of offspring breeding between men and women with similar blood ties is high, they may also carry various genetic diseases. As the highest-class royal family in Japan, why has it insisted on inbreeding until now?
This is actually "thanks" to their unwavering self-awareness. In the eyes of the Japanese royal family, they are descendants of God. What flows from the gods in heaven is the blood of God in heaven, and also shoulders the responsibility of governing the country and land for the gods. Such noble blood naturally cannot be "incompatible" with mediocre and humble people.
So in order to continue the noble and pure bloodline of the royal family, Japanese royal family, both men and women, can only marry close relatives who are also royal families, and can only go to , blood relatives at the farthest. If a royal woman wants to marry a civilian man without status, she can only give up her royal status forever and become a civilian to live the hard life of an ordinary person. will not be allowed to return to her parents' home in her whole life.
is not only a Japanese royal family, but also an ancient Egyptian pharaohs and medieval European nobles have been around for hundreds of years. only married their close relatives for political stability and pure blood, and it is inevitable that a lot of frail and sickly deformed children will be born. But now these phenomena are gradually disappearing with social civilization, and only the Japanese royal family still firmly adheres to this destined rule.
In the 20th century, Japanese forensic doctors were shocked during the autopsy of the dead royal family. When the body was spread out, they found that the intestines had rotted, emitted a foul odor, the organs were severely atrophy, and only one testicle was left, which had turned black.
I have to say that our country is really prescient in this regard. From the beginning of , I realized the harm of blood marriage, and the ruler ordered that same-sex marriage be prohibited.To this day, our country has long issued the legal provisions on "prohibition of marriage between direct blood relatives and collateral blood relatives within three generations", which has fundamentally avoided the harm caused by inbreeding.
I hope the Japanese royal family will "go to the mortal world" as soon as possible, so that for the health of future generations, we can change the tradition of marriage in close relatives!
Author: Yimian
