#human-variation

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Philosophy
fromenglish.elpais.com
3 days ago

Richard Wrangham, anthropologist: Humans domesticated ourselves by defeating our alpha male ancestors'

Human beings exhibit both empathy and a unique capacity for planned violence, reflecting a complex duality in our nature.
History
fromwww.nytimes.com
2 weeks ago

Humans Had Dogs Before They Had Farming, Ancient DNA Confirms

Dogs were domesticated by hunter-gatherer societies in Europe around 14,000 years ago, predating agriculture.
OMG science
fromHarvard Gazette
1 week ago

Anthropologist traces split between Homo sapiens and Neanderthals - Harvard Gazette

The transition from multiple human forms to Homo sapiens dominance involved interactions and interbreeding with Neanderthals, not a clear-cut victory.
LGBT
fromPsychology Today
1 week ago

Why Identical Twins Can Have Different Sexual Orientations

Sexual orientation may have genetic links, but identical twins can have different orientations due to epigenetics and prenatal hormone exposure.
Science
fromNature
2 weeks ago

Dawkin's paradox: dissecting the body's battle to keep selfish genes in check

Internal conflict is a central feature of organismal biology, influencing development, evolution, and cancer.
OMG science
fromNature
2 weeks ago

How DNA in dirt is shaking up the study of human origins

Ancient DNA can be recovered from sediments, revolutionizing the study of extinct species and the history of ecosystems.
Science
fromNature
3 weeks ago

Daily briefing: Tiny bones from Neanderthal fetus point to downfall of the species

A genetic bottleneck contributed to the Neanderthals' extinction, while AI-generated X-rays challenge radiologists' ability to discern real from fake.
fromNature
3 weeks ago

Adaptive evolution of gene regulatory networks in mammalian neocortex - Nature

To characterize CREs and TFs for neocortical ExNs, we used Arpp21-Gfp or Fezf2-Gfp transgenic mice and enriched GFP-expressing neocortical upper layer (L2-4) intratelencephalic (IT) neurons or deep layer (L5-6) predominantly extratelencephalic (ET) neurons, respectively, from neonatal mice (postnatal day (PD) 0), an age at which neocortical ExN identity and connectivity are established.
Roam Research
Psychology
fromPsychology Today
4 weeks ago

The Evolution of Brain and Intelligence

Human brains are large and complex but not uniquely so compared to other species; human intelligence is adapted to specific ecological niches, with symbolic reasoning being a key cognitive distinction from other animals.
#neanderthal-human-interbreeding
Medicine
fromNature
1 month ago

Identical twins on trial: can DNA testing tell them apart?

Identical twins share identical DNA, making standard forensic DNA testing unable to distinguish which twin committed a crime, though whole-genome sequencing can identify rare post-birth mutations to differentiate them.
fromwww.npr.org
1 month ago

Humans' pull toward alcohol may have ancient origins (according to chimp pee)

Chimpanzees consume 10 pounds of fruit pulp per day on average - African star apple. It's delicious, too. I tried some. And when fruits like this ripen, they can ferment, producing alcohol. In primates, it could be that when you smell alcohol, that means that's where the sugars are.
Wine
fromMail Online
1 month ago

How your FINGER LENGTH could reveal your sexuality

Their results revealed that women with lower 2D:4D are more likely to be lesbian. Meanwhile, men with higher 2D:4D are more likely to be gay. 'Bisexual women are more similar to heterosexual women in digit ratios, but there may be further nuance,' the researchers explained.
Science
Psychology
fromPsychology Today
1 month ago

Are We Hard-Wired to Be Xenophobic?

Out-group animosity stems from both upbringing and evolutionary survival pressures, but can be managed through conscious awareness and behavioral control.
OMG science
fromNature
1 month ago

Daily briefing: This Utah family line might be evidence of 'selfish genes' in humans

Researchers identified a Utah family with seven generations showing twice as many boys as girls, providing first clear evidence of sex-ratio distorting genes in humans.
Science
fromNature
1 month ago

Daily briefing: How DNA testing can tell identical twins apart

Advanced forensic techniques including whole-genome sequencing and epigenetic analysis can differentiate between identical twins in criminal investigations, while GLP-1 drugs show potential in reducing addiction across multiple substances, and researchers have successfully synthesized hexagonal diamond.
fromIrish Independent
2 months ago

Risk of carrying the 'Celtic curse' gene varies across Ireland, new study finds

Targeting genetic screening for the condition to priority areas could help identify at-risk individuals earlier and avoid future health complications, experts say. Haemochromatosis symptoms can evolve over decades as high iron levels in the body cause damage to organs. Early diagnosis and treatment - such as regular blood donation to reduce iron levels - is key to prevent liver damage, liver cancer and arthritis.
Public health
fromNature
1 month ago

Is a 'selfish gene' making a Utah family have twice as many boys as girls?

Such sex 'distorters' have been discovered - and studied in great depth - in laboratory animals such as mice and flies, in which their effects can be detected through selective breeding. 'If you look, more often than not, you find them,' says Nitin Phadnis, an evolutionary geneticist at the University of Utah in Salt Lake City, who co-led the study.
Science
Science
fromInsideHook
1 month ago

Scientists Question the Conventional Y Chromosome Wisdom

Researchers discovered evidence that certain genetic elements can skew sex ratios toward male offspring beyond the expected 50/50 split, with one family showing a 2:1 male-to-female ratio across generations.
Science
fromNature
1 month ago

Neanderthal dad, human mum: study reveals ancient procreation pattern

Female Homo sapiens and male Neanderthals mated more frequently than the reverse pairing, shaping human genetic ancestry patterns revealed through analysis of female Neanderthal specimens.
Science
fromwww.scientificamerican.com
1 month ago

Sex between Neandertals and anatomically modern humans tended to follow a specific pattern

Neandertal-human interbreeding was primarily between male Neandertals and female humans, evidenced by the absence of Neandertal DNA on modern human X chromosomes.
Science
fromwww.scientificamerican.com
1 month ago

Mosquitoes may have evolved a taste for human blood thanks to Homo erectus

Some mosquitoes developed a preference for human blood 1.6 to 2.9 million years ago, potentially coinciding with Homo erectus presence in Southeast Asia.
#genetics
fromPsychology Today
1 month ago

How Brawn and Engineering-Not Brains-Led to Human Domination

I'm always looking for books that challenge the status quo, and when I learned about Roland Ennos' new book The Powerful Primate: How Controlling Energy Enabled Us to Build Civilization, I couldn't wait to get my eyes on it, and I'm thrilled I did. In this landmark book, Ennos offers "a compelling argument that flips the traditional view of humanity on its head."
Science
Science
fromMail Online
2 months ago

Homosexuality may have evolved as a 'survival strategy', study claims

Same-sex behaviors in primates increase in harsh environments and within larger, more complex social groups, possibly strengthening bonds that aid group survival.
Science
fromwww.scientificamerican.com
2 months ago

How long you live may depend much more on your genes than scientists thought

Heritability of human lifespan roughly doubles to about 50% when extrinsic mortality is removed, showing a stronger genetic influence on intrinsic aging.
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