2,442 results
2,442 results for: mutations
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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.
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A fish’s solution to broken hearts
The zebrafish can regenerate missing heart muscle.
- Health & Medicine
Ketones to the Rescue
Medical researchers are investigating a slew of possible applications for acids called ketones, which the body produces naturally when deprived of carbohydrates and protein.
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Probing Ocean Depths: Photosynthetic bacteria bare their DNA
Scientists have deciphered the DNA of two highly abundant, photosynthetic ocean bacteria.
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Genghis Khan’s Legacy?
Genghis Kahn's military success 800 years ago may have spread a particular form of the Y chromosome, one he may have himself carried.
- Health & Medicine
Surgical Option: Removal of ovaries can prevent cancers in women at risk
In women who harbor mutations in one of the BRCA genes, ovary removal reduces the risk of developing ovarian, peritoneal, and breast cancers.
- Health & Medicine
Risk Factor: Genetic defect hikes breast cancer threat
A mutation already linked to several types of cancer doubles the risk of breast cancer in a woman and multiplies men's slight risk of the disease even more dramatically.
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Popularity of germ fighter raises concern
The growing use of the antiseptic triclosan in products ranging from mouthwash to cutting boards and hunting clothes may create bacteria resistant to antibiotic drugs.
