2,456 results
2,456 results for: mutations
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Aging Factor: Gene mutations may be key to long life
Some centenarians carry mutations in a pathway associated with longevity in worms and fruit flies.
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New World Stopover: People may have entered the Americas in stages
People first reached the edge of the Americas about 40,000 years ago but had to stay put for at least 20,000 years before melting ice sheets allowed them to move south and settle the rest of the continent.
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More evidence that flies sleep like people
A brain chemical puts fruit flies to sleep.
- Health & Medicine
Warning Sign: Genetic fragments tag cancer severity
High levels of the microRNA miR-21 lead to poor prognoses for colon cancer patients.
- Health & Medicine
HIV variant might help vaccine search
Scientists have discovered an unusual HIV protein in a Kenyan woman that makes the virus vulnerable to antibodies.
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Seeing Again: Blind fish parents have fry that see
Cross two strains of blind cavefish that have lived in the dark for a million years, and some of their offspring will be able to see.
- Health & Medicine
Down syndrome’s anti-tumor effect
The chromosomal abnormality that causes Down syndrome might protect against some solid tumors.
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Limiting Damage: Fragile X symptoms modulated in mice
Reducing activity of a gene in mice alleviates many of the symptoms of fragile X syndrome, a genetic defect that causes mental retardation in people.
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New clue to Down syndrome, leukemia link
One-fifth of people with Down syndrome who also have acute lymphocytic leukemia harbor a mutation in their JAK2 gene.
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Hold the Embryos: Genes turn skin into stem cells
Scientists have found a way to convert a person's skin cells directly into stem cells without creating and destroying embryos.
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Flawed Stem Cells Yield Fragile X Clues: Researchers study genetic disorder via discarded embryos
The most common inherited cause of mental retardation arises when a mutated gene is shut down early in embryonic development.
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Not Like Clockwork: High-fat diet disrupts daily routines of mice
Fatty diets disrupt the sleep and metabolic cycles of mice by changing the activity of genes.
