2,444 results
2,444 results for: mutations
- Humans
Science News of the Year 2004
A review of important scientific achievements reported in Science News during the year 2004.
- Health & Medicine
Gene causes body-fat disorder
A gene linked to a form of muscular dystrophy also causes a disease that deposits fat unevenly after puberty.
- Health & Medicine
Cluster Buster: Might a simple sugar derail Huntington’s?
A study in mice with a disease resembling Huntington's shows that a simple sugar impedes the protein aggregation that kills brain cells.
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Brain-Cell Loss Found in Narcolepsy
The puzzling sleep disorder known as narcolepsy stems from the destruction of a small group of brain cells.
- Anthropology
Humanity’s pedestal lowered again?
A new genetic study reaches the controversial conclusion that chimpanzees belong to the genus Homo, just as people do.
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Livers: Better late than never
Drawing on an ancient Greek myth, researchers have given the name prometheus to a mutant strain of zebrafish that appear to have no liver early in their lives.
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19306
Your article ends with the claim that “a color-blind person and a noncarrier have no chance of having a color-blind child.” Yet as I recall from basic biology class, color blindness is considered a prime example of a sex-linked trait, which makes the above statement untrue. Carried on the X chromosome, the trait would manifest […]
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Don’t Let the Bugs Bite
Using disease-control strategies based on genetic engineering, scientists are working to counter Chagas' disease, malaria, sleeping sickness, and other insectborne infections.
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Visionary Research
Scientists are debating why primates evolved full color vision and whether that development led to a reduced sense of smell.
- Math
Prime-Time Cicadas
Cicadas are flying, plant-eating insects. Most cicada species have life cycles that span 2 to 8 years. They spend most of their lives underground before emerging as adults. In a few species, almost all the individuals in a given location come out of hiding at the same time. These are known as periodical cicadas, and […]
- Health & Medicine
Enzyme needed to degrade acetaldehyde
A shortage of the enzyme ALDH-2, which is needed to break down alcohol in the body, causes a buildup of the cancer-linked chemical acetaldehyde, perhaps explaining why alcoholics lacking ALDH-2 have high rates of mouth and throat cancers.
- Computing
Straining for Speed
Hitting fundamental limits on how small they can make certain structures within semiconductor transistors, chip makers are deforming the silicon crystals from which those transistors are made to eke out some extra speed.
