Scientists have figured out how nature gets rid of mutations in DNA, so they do not accumulate to a critical mass.
The researchers said that every child has about 70 mutations, which are not his parents. At least 10% of them are harmful and will accumulate. In the end, this should lead to extinction.
A group of scientists from different countries told of how nature gets rid of the accumulated DNA mutations. If this does not happen, all beings would be doomed to extinction. The processes of evolution also caused by mutations of genes, but how is a “screening” of mutations, it is still not clear.
Scientists believe that a special mechanism that does not accumulate harmful mutations, which in the end will make the organism non-viable. By the way, some researchers believe that this is the way nature “dealt” with the ancestors of modern man – the emergence of a stronger species at the same time meant the accumulation of a critical mass of mutations in the genes of the old.
Geneticists have suggested that natural selection acts in one direction, the cleansing of the gene pool from harmful mutations. Simply put, the accumulation of mutations reduces the probability of their transmission to the offspring, since species with a high number of mutations is sick, is not fertile or just not attractive for other reasons. That is, when connecting a large number of mutations in one organism, their chances to breed are reduced. This theory was successfully tested on populations of laboratory animals.