2,429 results
2,429 results for: mutations
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Shades of Flesh Tone: Tests reveal gene for people’s skin color
Researchers have identified a gene that they propose plays a major role in determining a person's skin color.
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19537
I usually tend to downplay worries about research in genetics, but I was quite concerned after reading “Expanding the genetic code” (SN: 4/2/05, p. 222). The researchers surely have plans to keep whatever they create contained. But adding a fifth base to the DNA of bacteria with a genetic mutation rate 10,000 times that of […]
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19535
I usually tend to downplay worries about research in genetics, but I was quite concerned after reading this article. The researchers surely have plans to keep whatever they create contained. But adding a fifth base to the DNA of bacteria with a genetic mutation rate 10,000 times that of normal bacteria seems unnecessarily dangerous. I […]
- Health & Medicine
In Pixels and in Health
By simulating individual cells and their behavior inside the human body using a computer technique called agent-based modeling, scientists are gaining new insight into disease progression.
- Health & Medicine
Mixing Vessel: Air pollution helps cholesterol clog arteries
When paired with a diet high in fat, breathing polluted air on a regular basis accelerates the accumulation of dangerous plaques in arteries.
- Anthropology
The Human Wave
Anatomically modern people evolved in small groups of ancient Homo sapiens that never traveled too far but continually interbred with nearby groups, including other Homo species, creating a genetic wave that moved from Africa across Asia, a new model suggests.
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Mutated gene doubles fruit fly’s life span
The product of the Indy gene resembles transport proteins in mammals that enable intestinal and kidney cells to take in metabolites to produce energy.
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Plants fix genes using copies from ancestors
Some plants can reinstate genes missing from their own chromosomes but that had been carried by previous generations.
- Health & Medicine
Meat Poses Exaggerated Cancer Risk for Some People
Animal research probes why a genetic vulnerability renders some individuals especially susceptible to the colon carcinogens that can form in cooked meats.
- Health & Medicine
The Screen Team
New and experimental methods of screening for colorectal cancer that patients find less unpleasant than current tests could take a bite out of the malignancy's toll.
- Health & Medicine
Better Beta: Cells grown in lab may treat diabetes
Scientists have developed a technique to mass-produce a type of pancreas cell needed for transplants into people with type 1 diabetes.
- Humans
Letters from the May 21, 2005, issue of Science News
Rascal rabbits Evidence of animals sensing where people are looking and what they’re seeing is interesting yet hardly new (“Monkey See, Monkey Think: Grape thefts instigate debate on primate’s mind,” SN: 3/12/05, p. 163). For years, I have observed that wild rabbits will remain motionless as long as I stare in their direction. But as […]
