For a long time, inbreeding has been a taboo topic in human society, and people tend to avoid it.
Three generations of blood relatives are considered close relatives
Human beings know the dangers of inbreeding, and it has become the norm not to breed inbreeding. Why do they let dogsbackcross them? Doesn't this violate ethics?
Taboo inbreeding
In ancient my country, the punishment for inbreeding was very severe. Once discovered, the woman was regarded as unchaste and would be imprisoned in a pig cage , while the man would inevitably receive a severe beating.
In modern society, people still have great restrictions on inbreeding.
Previously, a brother and sister in Germany secretly ate forbidden fruit , but their parents caught them. The elder brother's leg was broken by his father on the spot. Later, after doctor's treatment, it was miraculously reattached.
Leg fractures under different circumstances
Netizens also ridiculed the unethical and forbidden love as "German Orthopedics", suggesting that everyone should not eat forbidden fruits at will, otherwise it will lead to serious consequences.
Our country not only has ethical problems, but also clearly stipulates in the relevant Civil Code that incest is an act of incest and constitutes the crime of incest.
What makes people curious is, what harm does inbreeding do to humans? Make people in every country so afraid of it.
The harm of inbreeding
Its harm is mainly reflected in the gene . According to the reproductive isolation principle of nature, the higher the level of animals, the more serious the consequences of inbreeding.
Gene chain
Human beings, as the most advanced intelligent creatures on earth, should also bear the heavy price of inbreeding.
First of all, many inexplicable congenital diseases will appear in the next generation of inbreeding. The disease
is originally hidden in recessive genes. When two similar genes are combined, some recessive genes are more likely to become dominant genes , and many unknown diseases appear.
What followed were congenital defects in the baby, which in layman's terms were malformed fetuses .
has specialized data showing that compared with people who are not close relatives, the probability of giving birth to a malformed fetus is 8 times higher for second-degree close relatives, 32 times higher for first-degree close relatives, and a terrifying 125 times higher for siblings.
Incest gives birth to a deformed fetus
If a baby has a normal deformity probability of only 0.1%, then the probability of a sibling is 12.5%.
Secondly, the offspring's immunity is low and they are easily infected by diseases.
If you are lucky enough to give birth to a healthy baby, it will be very difficult for this baby to grow into an adult. During the process of growth, he will be more susceptible to diseases than other people of the same age, and it will be difficult to treat.
The composition of the human immune system is shown in the figure
Many modern medical methods stimulate the body's immune system to resist viruses . If your immune system is strong enough, doctors can cure it with only a small amount of medicine.
If the immune system is fragile, I am afraid that no matter how advanced scientific methods are, it will be difficult to save it.
For babies born from close relatives, once they have a fever, it is equivalent to a major disease for ordinary people. If not treated well, the possibility of premature death is surprisingly high..
Finally, human society has long formed the concept of non-inbreeding. Once this happens, people will inevitably be ignored by the people around them.
Human beings are social animals, and no one can live outside the group.
Both close relatives are under tremendous psychological pressure. I believe no one wants to live like a "walking zombie".
Blood kinship chart within three generations
Generally speaking, it is difficult for humans to successfully achieve inbreeding.
Among the four ancient civilizations, ancient Egypt is a good example. In order to ensure the purity of the bloodline, the Egyptian royal family members mated with each other and gave birth to offspring.
Sometimes, even Egyptian queen is inherited from the ancestors. After the father marries, the son will marry, and the sister will marry the father and give birth to offspring. Invariably, their relationship is very complicated. This has also led to the emergence of many deformed babies.
So the Egyptian royal family all looked very strange. It’s no wonder that the murals and sculptures depict them so ugly.
Deformed Pharaoh Statue
Since humans know the dangers of inbreeding, why do they impose this kind of thing on dogs?
Close relatives of animals
First, for animals, the consequences of inbreeding are not as significant as for humans.
Dogs are middle-lower mammals in nature, and their species level is several levels different from ours.
Therefore, the harm caused by inbreeding of dogs will gradually become apparent after several generations.
And for dogs, even if is backcrossed to , it is not so easy to give birth to a malformed fetus.
Backcross analysis chart
The consequences of inbreeding in the animal kingdom are nothing more than the decline of genes, which leads to decreased immunity of offspring and infection with various diseases, thus reducing the survival rate.
In the long run this will lead to the demise of a population.
However, as dogs are the most loyal partners of humans, we can help dogs bear the consequences of inbreeding.
For example, when a dog's immunity declines and is infected with the disease , we can use modern medical methods to treat it.
As for survival issues, there is no need to worry.
The main responsibility of dogs in human society is to provide pets for humans to play with. The continuation of the species is not within the consideration of breeders.
Therefore, the pet cats and dogs we raise may look cute and cute, but once they are released into the wild, they will starve to death in less than two days.
Pugs
This is not only because they are accustomed to life in human society, but also because long-term inbreeding has led to genetic decline and they have lost the ability to survive independently.
here also calls on everyone, if you don’t keep a pet, don’t think about how to release it, as this is extremely harmful to pets.
Second, backcrossing dogs is also to ensure the purity of the bloodline and , which will be profitable in the market.
Friends who have raised pets all know that the purer the pet's bloodline, the more expensive it will be .
Some pets with pure blood can sell for thousands or even tens of thousands per cub, and the market is still very large.
Pure-blood Labrador
The only way to give birth to a purer bloodline is to backcross. For example, an adult male dog is backcrossed to his mother. Due to the similarity of genes, will not change much when combined with , and certain impurity genes can also be removed, which is very effective.
Inbreeding of the same generation and the same kind is second, but it can ensure the stability of the same bloodline .
Therefore, inbreeding has almost become a necessary means to cultivate the next generation of pets.
Especially today with the improvement of social standards, people have more money to buy pets, and the high-end pet market is also booming.
Third, among animal groups, there is no need to consider any customs or social issues, and giving dogs close relatives will be smooth.
Dog Family
But this does not mean that inbreeding is useless. In some special circumstances, it will become an emergency means for animals.
Used for emergency inbreeding
Previously, my country's South China tigers were in critical numbers. By the end of the 20th century, their number was only an astonishing 0 .
In order to prevent this species from disappearing from the earth, Chinese scientists urgently focused on breeding and breeding the remaining 30 South China tigers.
However, due to the small number, the South China tigers had to choose to inbreed the offspring , and this behavior became out of control.
By 2010, the number of South China tigers had grown to 10 .
South China tiger
But inbreeding is not a long-term solution after all. The scientific worry is that the genetic decline of these South China tigers is so serious that if they encounter an epidemic disease, they will be "annihilated."
Although scientists have tried their best to prevent epidemic diseases, there are always gaps.
South China tiger
In this regard, scientists are already studying new methods of breeding offspring , which are currently at a critical stage of technology. If successful, it will be beneficial to South China tigers and even endangered animals in the world.
