Tag

Interbreeding

All articles tagged with #interbreeding

science1 month ago•17 min saved

Ancient mating bias reshapes modern DNA: Neanderthal men, modern women

New research from the Tishkoff lab shows that Neanderthal DNA on the human X chromosome is surprisingly scarce, while modern-human DNA is enriched on Neanderthal X chromosomes by about 62% compared with their other chromosomes. This pattern points to sex-biased interbreeding where Neanderthal males mated with anatomically modern human females, shaping the modern genome more through mating dynamics than simple genetic incompatibility. Published in Science, the findings suggest ancient social patterns left a lasting imprint on our DNA and offer new insight into human evolution.

via Earth.com|

#ancient-dna #human-evolution #interbreeding

science1 month ago•33 min saved

Ancient Neanderthal Men Likely Paired More Often with Early Humans

A study published in Science finds Neanderthal males interbred with human females more often than the reverse, suggesting a non-random partner pattern possibly driven by migration or social dynamics; researchers also note that hybrids from Neanderthal mothers and human fathers may have had lower survival, helping explain the persistence of Neanderthal DNA (up to about 2%) in modern European and Asian populations.

via Yahoo News UK|

#early-humans #interbreeding #mating-patterns

science1 month ago•32 min saved

DNA clues reveal sex-biased mating between Neanderthal men and modern humans

A Science study finds Neanderthal men and anatomically modern human women interbred more than the reverse, as Neanderthal DNA is disproportionately found on the human X chromosome. The result points to sex-biased gene flow and raises questions about the social dynamics behind these ancient matings, which researchers are looking to explore further.

via Yahoo|

#genetics #interbreeding #mating-patterns

anthropology1 month ago•49 min saved

Sex-biased interbreeding left a lasting Neanderthal DNA pattern in modern humans

A genetic analysis comparing Neanderthal genomes with African references shows Neanderthals carried far more modern human DNA on their X chromosome than on other chromosomes, while modern humans have very little Neanderthal DNA on their X. The researchers argue that this pattern results from sex-biased interbreeding—likely Neanderthal males with modern human females—rather than widespread genetic incompatibility. Computer simulations using a mating bias reproduce the observed distribution, suggesting social/partner-choice factors shaped inheritance. The team plans to investigate population structure to determine which sex moved between groups and how cultural practices influenced mating in ancient encounters.

via Archaeology News Online Magazine|

#anthropology #dna #interbreeding

science1 month ago•98 min saved

Male Neanderthals more often paired with human women, new study finds

A new Science study finds interbreeding between Neanderthals and modern humans was strongly sex-biased, with mating preferentially between male Neanderthals and female Homo sapiens. This bias helps explain the “Neanderthal deserts” on the human genome, especially the scarcity of Neanderthal DNA on the X chromosome, and why Neanderthal genes are unevenly distributed across non-African populations. Analyzing genomes from African populations with no Neanderthal ancestry and comparing them to Neanderthal genomes, the researchers conclude mate preference best accounts for the pattern, while noting that other evolutionary factors may also have contributed and that future work will explore Neanderthal social structures.

via Live Science|

#genomes #interbreeding #neanderthals

science1 month ago•1 min saved

Ancient DNA Reveals Strong Mate Preferences Across Neanderthals and Modern Humans

A Science study shows that Neanderthal and modern-human ancestry influenced ancient mating: men with more Neanderthal DNA tended to pair with women with more modern-human DNA, suggesting a strong historical preference that helped shape the Neanderthal DNA in present-day genomes, though whether this reflects attraction or other factors remains uncertain.

via The New York Times|

#genetics #human-evolution #interbreeding

science1 month ago•3 min saved

Ancient mating bias: Neanderthal men more often mated with modern humans

A genetic study shows a sex-biased interbreeding pattern between Neanderthals and anatomically modern humans, with Neanderthal males more frequently mating with human females, helping explain the uneven distribution of Neanderthal DNA on the human X chromosome.

via The Guardian|

#evolution #gene-flow #interbreeding

archaeology1 month ago•68 min saved

Neanderthals fell to a mosaic of factors, not a single foe

Extinction of Neanderthals appears to be the result of a mix of regional pressures: small, isolated populations prone to inbreeding and mutational burden, competition with expanding modern humans, and varied demographic dynamics across Eurasia. Genetic evidence confirms interbreeding with Homo sapiens, meaning Neanderthals contributed to the modern human genome, but there is no single smoking gun or uniform fate—different Neanderthal groups disappeared for different reasons over time.

via Live Science|

#ancient-dna #archaeology #extinction

science4 months ago•3 min saved

New Research Suggests Neanderthals Merged with Modern Humans, Not Extinct

New research suggests Neanderthals may never have fully gone extinct but instead were gradually absorbed into Homo sapiens through interbreeding, with their genes still present in modern humans, challenging traditional views on their disappearance.

via ScienceAlert|

#extinction #genetic-absorption #human-evolution

science5 months ago•3 min saved

Mathematical Model Suggests Genetic Dilution Led to Neanderthal Extinction

A new study using a mathematical model suggests that the disappearance of Neanderthals could be explained solely by genetic dilution resulting from repeated small-scale interbreeding with modern humans over thousands of years, without the need for catastrophic events.

via Phys.org|

#genetic-dilution #interbreeding #modern-humans

science7 months ago•5 min saved

New Evidence Suggests Extended Interbreeding Between Neanderthals and Humans

Scientists have found evidence at Skhul Cave in Israel suggesting that interbreeding between Neanderthals and Homo sapiens occurred around 140,000 years ago, predating previous estimates by nearly 100,000 years, indicating a long period of coexistence and genetic mingling between the two species.

via CNN|

#homo-sapiens #human-evolution #interbreeding

science7 months ago•4 min saved

New Fossil Evidence Suggests Extended Interbreeding Between Humans and Neanderthals

A re-analysis of a 140,000-year-old child's skeleton from Skhul Cave suggests early contact and possible interbreeding between humans and Neanderthals, challenging previous timelines and highlighting the region as a long-term contact zone.

via Earth.com|

#ancient-dna #homo-sapiens #interbreeding

science7 months ago•3 min saved

Ancient Skull Suggests Extended Interbreeding Between Humans and Neanderthals

A 140,000-year-old child's skull from Israel shows evidence of interbreeding between Neanderthals and modern humans, challenging previous timelines and suggesting prolonged contact between the two species in the region.

via ScienceAlert|

#fossil-discovery #human-evolution #interbreeding

science7 months ago•3 min saved

Ancient Child's Bones Reveal Earlier Interbreeding Between Humans and Neanderthals

A 140,000-year-old fossil from Skhul Cave provides the earliest evidence of interbreeding between Neanderthals and Homo sapiens, showing a mix of traits and indicating social and biological relations between the two groups in the Land of Israel.

via Phys.org|

#fossil-evidence #homo-sapiens #interbreeding

science7 months ago•4 min saved

Ancient Child's Bones Reveal Early Human-Neanderthal Interbreeding

Researchers used advanced 3D imaging to study the bones of a 140,000-year-old child from Israel, revealing evidence of interbreeding between early humans and Neanderthals much earlier than previously thought, challenging assumptions about their interactions and coexistence.

via The Independent|

#3d-mapping #ancient-bones #homo-sapiens