2,444 results
2,444 results for: mutations
-
Autism Advance: Mutated genes disrupt nerve cell proteins
Two gene mutations that cause autism suggest that nerve cell connections called synapses are key to the disorder.
-
DNA Bar Codes
Scientists are using a small piece of DNA as a molecular bar code, a unique identifier to separate organisms into species.
- Health & Medicine
Drugs slow aging in worms
Drugs that defuse so-called free radicals lengthen a worm's life span by more than 50 percent.
-
Devil’s Lapdog Gets Its Due: The lab rat bares its DNA to biologists
Scientists announced that they have deciphered the full DNA sequence of the standard lab rat, setting the stage for a new flurry of biomedical research on this rodent and providing insight into mammalian evolution.
- Earth
Volcanic Legacy: Tortoises chronicle eruption in their genes
An ancient volcanic eruption in the Galápagos Islands left its legacy in the diminished genetic diversity of one subspecies of the archipelago's famed giant tortoises.
- Paleontology
Flightless Feathered Friends
New finds of fossil penguins, as well as analyses of the characteristics and DNA of living penguins, are shedding light on the evolution of these flightless birds.
-
Feline Finding: Mutations produce black house cats, jaguars
Mutations in two different genes, which lead to black fur in house cats, jaguars, and jaguarundis, may have protected the black felines from an epidemic long ago.
- Anthropology
Prehistoric Family Split: DNA puts Neandertals on edge of human ancestry
The largest sample of ancient mitochondrial DNA extracted from Stone Age fossils to date indicates that Neandertals made, at most, a small genetic contribution to our direct prehistoric ancestors.
-
The Bad Seed
Researchers are racing to identify tumor-forming stem cells in skin, lung, pancreatic, and many other cancers.
- Health & Medicine
AIDS Vaccine Tests Well in Monkeys
An experimental AIDS vaccine bolstered with two immune proteins protects rhesus monkeys from the disease even when they are exposed to a combination of simian and human immunodeficiency virus.
-
Losing Rhythm: Gene mutation causes heart problems
Chinese researchers have for the first time identified a genetic defect that causes atrial fibrillation, a disorder in which the heart's upper chambers beat irregularly and too rapidly.
- Anthropology
Cannibalism’s DNA Trail: Gene may signal ancient prion-disease outbreaks
Cannibalism among prehistoric humans may have left lasting genetic marks.
