2,450 results
2,450 results for: mutations
-
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.
- 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.
-
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.
-
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.
