Tag: PNAS

Genes, Languages and Artifacts Yield Insights Into African Prehistory

The author during her time as a Peace Corps volunteer in Kenya. As a Peace Corps volunteer teaching in Kenya 25 years ago, I was fascinated by the cultural, linguistic, and physical differences among the people of eastern Africa. One of our Kenyan trainers took us to a "boma" where his tall, ...

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Malaria Parasite May Have Found Way To Thwart Protective Genetic Variation

Each year at least 350 million people around the world are infected by malaria parasites.  More than one million people, mainly young children, succumb to the disease.  But these numbers would be even higher if it weren’t for genetic adaptations that have evolved in populations living in areas where malaria ...

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Large Study Reveals Details of African American Genetic Ancestry

As shown in these ancestry paintings from 23andMe, the proportion of African DNA can vary widely for African Americans. A recent study led by Carlos Bustamante of Cornell and Sarah Tishkoff of the University of Pennsylvania has shown that genetically speaking, African American can mean a lot of different ...

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SNPwatch: Genetic Clues to Bowel Disease Found in Mice and Men

Inflammatory bowel disease (IBD), which can appear as either ulcerative colitis or Crohn's disease, damages the lining of the digestive tract and leads to abdominal cramps, incomplete digestion and nutritional deficiencies. Previous research on IBD gave researchers reason to suspect that the CD39 gene, ...

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SNPwatch: Genetic Variation Associated With Addiction In Caucasian Women

Although environment plays a major part in addiction — you can't get hooked on something you've never tried — genetics plays a substantial role in determining whether a person who does use a drug will become addicted to it. A few DNA variations have been identified that seem to increase the odds a person ...

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SNPwatch: Genetic Variation In Morphine Receptor May Play A Part In Coping With Social Rejection

SNPwatch gives you the latest news about research linking various traits and conditions to individual genetic variations. These studies are exciting because they offer a glimpse into how genetics may affect our bodies and health; but in most cases, more work is needed before this research can provide ...

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SNPwatch: Genetic Variation May Help Immune System Put Up Just The Right Amount Of Fight

SNPwatch gives you the latest news about research linking various traits and conditions to individual genetic variations. These studies are exciting because they offer a glimpse into how genetics may affect our bodies and health; but in most cases, more work is needed before this research can provide ...

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New Study Argues For Construction of Mexican Medical Genetic Reference Database

Mexican flu virus genetics has been much in news lately; how about a look at Mexican human genetics for a change? A new article from researchers at Mexico's National Institute for Genomic Medicine (INMEGEN) examines genetic diversity across the nation, and argues that, in order to conduct studies of common ...

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The Origins of Pastoralism in Africa: What do the Genes Say

This guest post is by Brenna Henn, a doctoral student in Stanford University's Department of Anthropology and a 23andMe consultant. Brenna studies human evolution using genetic information. Her interests include the origin of modern humans, migration patterns among African groups, and genetic models of ...

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