A new study published in the journal Nature by scientists at the University of Copenhagen in Denmark, published in the journal Nature, suggests that there is a close relationship between human ancestors Homo Neanderthalensis and Denisovans.
Frido Welker, a postdoctoral fellow at the University of Copenhagen, said: “We extracted the oldest human genetic data from an 800,000-year-old human tooth and found evidence of a close relationship between human ancestors (Homo s), Neanderthals and Denisovans by analyzing ancient proteins. “
In the study, the researchers sequenced the ancient protein in the 800,000-year-old enamel fossil using a technique called mass spectrometry, and then used a new molecular method developed at the University of Copenhagen (paleoteomics) to allow scientists to retrieve molecular evidence to more accurately reconstruct human evolution.
The researchers say such studies are based either on the results of ancient DNA analysis or on observations of fossil shapes and physical structures. The study used mass spectrometry, a method commonly referred to as paleote, to analyze paleoproteins, allowing us to overcome these limitations.
Although the hypothesis that human ancestors may have been the common ancestor of Neanderthals and modern humans does not correspond to the evolutionary context of humans, the findings do have some common features with Neanderthals. In addition, new research confirms that the facial features of human ancestors are very similar to those of Homo sapiens, but very different from those of Neanderthals and their modern ancestors.