genetics

Twin Study Finds Genetics Affects Where Children Look, Shaping Mental Development

A new study co-led by Indiana University that tracked the eye movement of twins finds that genetics plays a strong role in how people attend to their environment. Conducted in collaboration with researchers from the Karolinska Institute in Sweden, the study offers a new angle on the emergence of differences between individuals and the integration of genetic and environmental factors in social,…

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How Neanderthals Influenced Human Genetics at the Crossroads of Asia and Europe

When the ancestors of modern humans migrated out of Africa, they passed through the Middle East and Turkey before heading deeper into Asia and Europe. Here, at this important crossroads, it’s thought that they encountered and had sexual rendezvous with a different hominid species: the Neanderthals. Genomic evidence shows that this ancient interbreeding occurred, and Western Asia is the most likely…

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Two Ancient DNA Studies Provide New Insights into Lives of Neanderthals and Paleolithic Humans

Two separate teams of researchers have used advanced DNA sequencing methods to analyze the 52,000-year-old remains of a Neanderthal woman from Vindija Cave in Croatia, and the 34,000-year-old remains of four anatomically modern humans from the Upper Paleolithic archaeological site of Sunghir. The findings are published in two papers in the journal Science. Kay Prüfer et al. A high-coverage Neandertal genome from Vindija…

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Humans Still Evolving, Large-Scale Study of Genetic Data Shows

In a study analyzing the genomes of 210,000 people in the United States and Britain, researchers have found that the genetic variants linked to Alzheimer’s disease and heavy smoking are less frequent in people with longer lifespans, suggesting that natural selection is weeding out these unfavorable variants in both populations. “It’s a subtle signal, but we find genetic evidence that…

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Study Reveals White Nationalists’ Reactions When Genetics Test Results Challenge Their Identity

A new study by UCLA researchers reveals the range of reactions — from rejection to reinterpretation to acceptance — after white nationalists learn that DNA ancestry test results indicate they may not be as white or European as they previously thought. The study, “When Genetics Challenges a Racist’s Identity: Genetic Ancestry Testing Among White Nationalists,” is the work of UCLA researchers Aaron Panofsky and…

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How The Genome Sets its Functional Micro-Architecture

The genes that are involved in the development of the fetus are activated in different tissues and at different times. Their expression is carefully regulated by so-called “enhancer sequences”, which are often located far from their target genes, and requires the DNA molecule to loop around and bring them in close proximity to their target genes. Such 3D changes of…

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