Why can't close relatives marry? What kind of relatives are not close relatives
4hw.org: in ancient China, there were so many things like cousins marrying cousins, and they were called "marriage plus marriage". Now our country's laws clearly stipulate that marriage by close relatives is prohibited by law because of the great harm of marriage by close relatives. What are the harms of marriage by close relatives? What kind of relatives are not close relatives when they get married? Let's have a look!
Why can't relatives get married
Why can't relatives get married? I believe many people want to know. So why? According to the research, after the close relatives get married, because the genetic genes in the human body come from both parents, the genetic genes are passed down vertically from generation to generation. If one or both parents have some pathogenic genetic genes, they can also pass on from generation to generation. Because both of them come from the same ancestor and have more common genes, the inbreeding marriage will make the genes of some genetic diseases meet together and make these genetic diseases happen and continue. Let's talk about the harm of marriage of close relatives.
1. Significantly improve the incidence of recessive genetic diseases.
If the close relatives of relatives marry, the probability of their disease causing genes forming homozygotes becomes very high, which increases the incidence of many recessive genetic diseases. The data show that the incidence of recessive genetic disease in the offspring of close relatives is 150 times higher than that of the offspring of non close relatives.
2. Multiple genetic diseases
According to relevant data and a large number of cases, if the close relatives get married, it is easy to get congenital heart disease, anencephaly, spinal cord fission and other polygenic genetic diseases.
3. High early mortality and deformity rate of offspring
The probability of early death or deformity of the offspring born from the marriage of the close relatives is higher than that of the non close relatives.
4. Poor physical fitness of future generations
In general, the offspring born by the marriage of close relatives are relatively weak, mainly manifested in weight loss and shorter height.
To sum up, I think you should know why relatives can't get married. Generally speaking, it is the marriage of close relatives, which is very easy to expose one or both physical and mental weaknesses and defects without reservation, and accumulate them and pass them on to future generations. What kind of relatives are not close relatives?
What kind of relatives are not close relatives
What kind of relatives are not close relatives? In short, those who are not within the scope of close relatives are not close relatives. What is the scope of close relatives? That is, both the lineal blood relatives and the collateral blood relatives within three generations belong to close relatives.
Conclusion: because the marriage of close relatives does great harm to the offspring, so for the sake of future generations, the law of our country also expressly prohibits the marriage of close relatives. Well, I'll introduce you to this small edition of information about why relatives can't get married and what kind of relatives don't count as close relatives.