Modern humans have very little genes from neandertalci.
The genomes of the ancient neaderthals contained a harmful mutation.
They reduced their fertility and, ultimately, resulted in the complete extinction of this species of human ancestors.
These researchers from Stanford University showed the following. The fecundity of neandertalci mutating genes were reduced by 40% even compared to modern society which, for the most part, not very inclined to mass reproduction. This was facilitated by the very common those wild ancestors incest and incest. About 100 thousand years ago on the territory of the former habitats of neandertalci, gradually began to move, anatomically similar to modern. The inevitable interbreeding were able to diversify the gene. Scientists say that part of the DNA of neandertalci can be detected in human genes now. Negative mutation of the genes of human ancestors have reduced their flexibility in terms of the environment and led to the gradual disappearance from the face of the planet. “Neaderthals legacy” led to the fact that residents in non-African countries have become less fit to bear children.
The data obtained in the result of research can be very suitable when working with animals, which disappear. These creatures appeared to have a number of problems similar to “nederlantsche”. I believe that they will be able to survive interbreeding with other populations.
