Sentences with phrase «archaic human dna»
Limitations of sequencing technologies kept archaic human DNA largely out of reach until 2006.
http://www.sciencemag.org/ Not exact matches
«This scenario reconciles the discrepancy in the nuclear DNA and mitochondrial DNA phylogenies of archaic hominins and the inconsistency of the modern human - Neanderthal population split time estimated from nuclear DNA and mitochondrial DNA,» says researcher Johannes Krause, also of the Max Planck Institute for the Science of Human Hishuman - Neanderthal population split time estimated from nuclear DNA and mitochondrial DNA,» says researcher Johannes Krause, also of the Max Planck Institute for the Science of Human HisHuman History.
Other geneticists at the meeting zeroed in on archaic DNA «deserts,» where living humans have inherited no DNA from Neandertals or other archaic humans.
That in turn could help determine when humans interbred with archaic hominids on other continents — such as Neandertals in Europe and Denisovans in Asia — whose genes linger in the DNA of some modern people (SN: 6/13/15, p. 11).
Today, almost all humans outside Africa carry traces of archaic DNA.
The researchers were searching for archaic DNA sequences in those human genomes at frequencies much higher than would be expected if those genes weren't doing people any good.
And now that investigators can sequence entire ancient populations, ancient DNA is revealing that humans on every continent are a complex mix of archaic and modern DNA.
By sequencing ancient DNA from the fossils of human ancestors, researchers have recently discovered new types of ancient humans and revealed interbreeding between our ancestors and our archaic cousins, including Neandertals.
«There are signs that intermixing with archaic humans was occurring in Africa, but given the warmer climate no one has yet found African archaic human fossils with sufficient DNA for sequencing.»
The DNA data suggest not one but at least two instances of interbreeding between archaic and modern humans, raising the question of whether Homo sapiens at that point was a distinct species (see sidebar).
New DNA data from archaic human species are providing a much higher resolution view of our past.
But ancient - DNA sequencing is beginning to shed some light on the issue.11 For example, by comparing a human HAR sequence with the HAR sequence of an archaic hominin, researchers can estimate if the HAR mutated before, after, or during the time period of our common ancestor.12 This approach has revealed that the rate at which HAR mutations emerged was slightly higher before we split from Neanderthals and Denisovans.3, 13 As a result, most HAR mutations are millions of years old and shared with these extinct hominins (but not with chimpanzees).
Feb. 11, 2016 — The first study that directly compares Neanderthal DNA in the genomes of a significant population of adults of European ancestry with their clinical records confirms that this archaic genetic legacy has a subtle but significant impact on modern human biology.