New genetic discovery changes everything we know about human history

Recent news is redefining our understanding of the first chapters of human history. Scientists from the University of Pennsylvania, in the United States, made a discovery archaeological and intriguing genetics involving Homo sapiens and Neanderthals.

This research revealed that the human DNA it was already intertwined with a lineage of early humans that went extinct before the encounter between Homo sapiens and Neanderthals in Eurasia.

Before the interaction between Homo sapiens and Neanderthals in Eurasia, researchers at the University of Pennsylvania discovered that human DNA was already mixed with a lineage of extinct early humans.

This revelation suggests a complex web of genetic interactions in the distant past, shedding new light on our origins.

A surprising discovery is that up to 6% of Neanderthal DNA has roots in modern humans. This challenges the traditional view that genetic mixing occurred after the great migration from Africa.

“This ancient lineage of modern humans brings a completely new view to human evolution. The lack of DNA sequences from ancient fossils prevents us from fully understanding the early evolution of Homo sapiens in Africa,” says Daniel Harris, a researcher at the University of Pennsylvania.

The presence of African genetic traits in Neanderthals suggests that interactions between different human groups occurred much earlier than previously believed.

Image: Yandex/Reproduction

Complexity of prehistoric movements

This discovery challenges the conventional narrative about human evolution, calling into question the idea that Neanderthals mixed with Homo sapiens only after the great migration from Africa.

The presence of African traits in Neanderthals suggests a more complex history of prehistoric movements and interactions between human groups in different parts of the world.

Furthermore, the research sheds light on the process of natural selection. It is notable that the majority of modern human DNA found in the Neanderthal genome is located in non-coding regions.

This indicates that natural selection, over time, has worked to eliminate genes detrimental to physical fitness. This discovery highlights how evolution shaped human genetics, eliminating genes that did not confer benefits.

Image: Yandex/Reproduction

A complex genetic web

This discovery goes beyond the interaction between Homo sapiens and Neanderthals. It also reveals a complex genetic network that involves other extinct human groups, such as the Denisovans. These encounters and crossovers have shaped human evolution in complex and unforeseen ways.

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The research carried out by University of Pennsylvania is rewriting early human history, challenging established concepts about when and how different human lineages interacted and intermingled.

This discovery not only gives us a richer view of our genetic history, but also highlights how humans, despite their differences, are connected by an intricate web of genetic kinship.

Human evolution is a more complex and fascinating narrative than we imagined, and research continues to reveal secrets buried in the DNA of our ancient ancestors.