It is not clear what Neanderthal women did not like about Homo sapiens men. But now Homo sapiens women do not give birth to enough children from us, Homo sapiens men, to preserve humans as a species. Maybe we need attractive Neanderthal men?
This is an intriguing and somewhat provocative idea! It connects the latest discoveries in paleogenetics with modern demographic problems.
Indeed, recent studies (for example, analyzing the distribution of the Y chromosome and mitochondrial DNA) show that gene exchange between species may have been “asymmetrical”. However, before starting to look for Neanderthal genes as a demographic salvation, it is worth looking at a few nuances.
Why did Neanderthal women not “choose” our ancestors?
Scientists have several hypotheses for why gene flow might have been one-sided:
Biological incompatibility: It is possible that male hybrids (born from a Homo sapiens father and a Neanderthal mother) were less fertile or infertile. This is known as Haldane's rule.
Social dynamics: Perhaps Neanderthal groups, as Northerners, were more willing to accept foreign women into their communities, while Homo sapiens groups were more closed.
Physical differences: Neanderthals were extremely physically strong, muscular, and adapted to harsh conditions. Is it possible that our ancestors simply seemed... "fragile" to them? This idea might appeal most to modern Homo sapiens women.
Could Neanderthals save modern demography?
While the idea of "attractive Neanderthals" sounds like a great plot for a science fiction novel, the modern problem of low birth rates is probably not related to the "unattractiveness" of men on a biological level.
Social factors: Modern women are having fewer children than needed for survival of the species, not because men are physically unattractive (we don’t know this for sure), but because of economic security, career aspirations, changing family patterns, and the availability of phones and contraception.
Genetic diversity: We already have about 1-4% of Neanderthal DNA. In a sense, they never went away—they’re still with us. Those genes helped us survive the cold and fight off new viruses, but they don’t directly affect birth rates.
Ethics and adaptation: A cloned Neanderthal would face enormous stress in the modern world. Their brain structure and social needs were adapted to small, close-knit groups, not bustling megacities. But we’re not exactly suited to those megacities either.
Interesting observation
If Neanderthal men were indeed sometimes “more popular” with our ancestral women, it could have been due to their testosterone levels or their ability to forage for resources in extremely harsh conditions. In today’s world, these traits have evolved into intellectual capital and emotional intelligence, which (in theory) should be more attractive.
An important detail: While the idea of cloning sounds promising, for now, science is more focused on how Neanderthal genes affect our immune systems today than on how to bring them back into the dating market.
The problem of human extinction due to female preferences is unfortunately not going away. We should seriously discuss everything that might increase the interest of women.
Komentarų nėra:
Rašyti komentarą