2,465 results
2,465 results for: mutations
- Life
Space trek may help worms live long
After 11 days in orbit, nematodes showed signs of slower aging.
- Health & Medicine
Proliferation protein goes rogue in lung cancer
Rac1b might promote malignancy, could be a target for treatment.
- Health & Medicine
Sperm analyzed, one by one
A close look at the sex cell’s DNA reveals basic molecular processes.
- Life
Polar bears’ ancient roots pushed way back
Full genetic blueprints suggest the animals split from brown bears millions of years ago.
- Life
Select cells appear to spawn tumors
Separate studies support the theory that stem cells cause cancers to emerge and recur.
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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.
- 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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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.
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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.
- 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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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.
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Emotional memory
The action of a stress hormone could be why emotionally charged events form especially vivid and durable memories.
