2,465 results
2,465 results for: mutations
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18938
In grad school, I read and learned from Ernst Mayr’s Populations, Species, and Evolution (1963, 1970, Harvard University Press). I think that “Alarming butterflies and go-getter fish” extremely simplifies Mayr’s position on speciation. The article says that Mayr focuses solely on geographic separation, “allopathic speciation.” This ignores the fact that Mayr discussed a variety of […]
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- Science & Society
Year in Review: High court rules against gene patents
The justices’ decision opens the way for choices in DNA testing.
- Neuroscience
Narcolepsy may be an autoimmune disease
Narcolepsy occurs when wayward immune forces launch an attack on brain cells responsible for wakefulness, a new study suggests.
- Microbes
The vast virome
When it comes to the microbiome, bacteria get all the press. But virologists are starting to realize that their subjects also do a lot more than make people sick.
- Humans
Letters from the May 6, 2006, issue of Science News
Same old grind “Ancient Andean Maize Makers: Finds push back farming, trade in highland Peru” (SN: 3/4/06, p. 132) remarks on maize starch granules being “consistent with” stone grinding. The presence of lowland arrowroot on one tool is consistent with trade, but it is equally consistent with a wandering hunter grabbing a root in the […]
- Life
Pigment pas de deux puts stripes on zebrafish
Interactions between color-producing cells generate patterns on fish fins.
- Life
New swine flu virus could infect people
Strains found in Korean pigs contain gene mutations that make them potentially transmissible to humans.
- Life
E. coli caught in the act of evolving
Researchers track thousands of bacterial generations to document the development of a trait nearly 25 years in the making.
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- Life
Breast cancer gets genetic profile
Insights from new data may help improve treatment for some types of disease.
- Genetics
Genetic mutations may explain a brain cancer’s tenacity
DNA damage may transform adult cells in glioblastoma, making the malignancy harder to kill.
