2,429 results
2,429 results for: mutations
- Health & Medicine
Split Ends: Cancers follow shrinkage of chromosomes’ tips
Genetic tabs called telomeres, which normally protect the ends of chromosomes, become undersized in many tissues that later turn cancerous, new studies in people show.
- Health & Medicine
DNA Differences Add Risk: Altered genes show up in Lou Gehrig’s disease
People with amyotrophic lateral sclerosis (ALS) are more likely than healthy people to have certain variations in the vascular endothelial growth factor (VEGF) gene, suggesting variant VEGF contributes to the disease.
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Code Breakers
Scientists are altering bacteria in a most fundamental way.
- Health & Medicine
One more reason to worry
A single dose of the AIDS drug nevirapine, given to mothers to help prevent them from infecting their children during birth, may be enough to prod the virus to develop drug resistance.
- Health & Medicine
Melanoma gene quickly reeled in
Biologists have discovered a gene that may contribute to many cases of deadly skin cancer.
- Anthropology
Gene change hints at brain evolution
A genetic mutation found only in humans first appeared around 2.8 million years ago, perhaps setting the stage for brain enlargement in the Homo lineage.
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Silence of the Xs
Does junk DNA help women muffle one X chromosome?
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19016
I was intrigued by your article for a couple of reasons. Isn’t this what Steven J. Gould said, that evolution is punctuated by environmental stresses that can bring about adapt-or-die changes rapidly? Also, what are the implications for the geneticists who base their mitochondrial DNA dating techniques on what they consider a fairly constant rate […]
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Human, Mouse, Rat . . . What’s Next?
Scientists lobby for a chimpanzee genome project.
- Plants
New gene-altering strategy tested on corn
Scientists have created herbicide-resistant corn with a new kind of genetic engineering that involves subtly altering one of the plant's own genes rather than adding a new gene.
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Ibuprofen cuts Alzheimer protein build-up
The common nonprescription drug ibuprofen may lessen abnormal accumulation of beta-amyloid in the brain, perhaps explaining how the drug decreases the risk of developing Alzheimer's disease.
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Sizing Up the Brain
Genetic mutations that produce small brains provide insight into the formation and evolution of the human brain.
