2,456 results
2,456 results for: mutations
- Health & Medicine
Nongene DNA boosts AIDS risk
People with a newly discovered genetic variation are more vulnerable to HIV infection.
- Humans
Burdens of knowledge
Greater understanding of the role of genetics in human diseases presents scientists with ethical dilemmas.
- Health & Medicine
Early Arrival: HIV came from Haiti to United States
New analysis of 25-year-old blood samples indicates that HIV reached the United States in about 1969, 12 years before AIDS was first formally described.
- Health & Medicine
Beware the Starlings: Common birds can carry avian influenza
Common songbirds such as starlings may be able to carry and spread avian influenza.
- Health & Medicine
Regulating Muscle Decline: Small molecules linked to degenerative diseases
Snippets of RNA that regulate gene activity play a role in muscle-wasting diseases such as muscular dystrophy.
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Emotional memory
The action of a stress hormone could be why emotionally charged events form especially vivid and durable memories.
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Bacteria thrive by freeloading
Mutant bacteria thrive by freeloading off their hard-working kin, but these slackers revert to working normally if they become too numerous.
- Health & Medicine
Shields Down: A cancer-fighting gene declines in old age
Decline of an important anti-cancer gene could contribute to increased cancer risk among the elderly.
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Aiding and Abetting: A longevity gene also promotes cancer
A gene that normally helps cells overcome stress can also promote cancer, perhaps offering a new target for cancer treatment.
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One tall gene
The first reported gene for height can account for almost a centimeter of difference among people who have different versions of it.
- Plants
Cretaceous Corsages? Fossil in amber suggests antiquity of orchids
Orchids appeared on the scene about 80 million years ago, according to evidence from a bee that collected orchid pollen and got trapped in amber.
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Share Alike: Genes from bacteria found in animals
Bacteria swap genes all the time, but it now appears that they can give their DNA to some animals as well.
