2,457 results
2,457 results for: mutations
- Chemistry
Flowerless plants make fancy amber
A new analysis suggests that ancient seed plants made a version of the fossilized resin credited to more modern relatives
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19306
Your article ends with the claim that “a color-blind person and a noncarrier have no chance of having a color-blind child.” Yet as I recall from basic biology class, color blindness is considered a prime example of a sex-linked trait, which makes the above statement untrue. Carried on the X chromosome, the trait would manifest […]
- Health & Medicine
Cells profilerate in magnetic fields
Magnetic fields such as those found within a few feet of outdoor electric-power lines could make cells that are vulnerable to cancer behave like tumors.
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Hormone dulls a tongue’s taste for sweets
The hormone leptin may suppress the tongue's ability to taste sugary substances.
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Teams implicate new gene in prostate cancer
A newly discovered gene may, in rare cases, cause prostate cancer or, more commonly, raise a man's risk of developing the disease.
- 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.
- 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.
- Anthropology
‘Y guy’ steps into human-evolution debate
The common ancestor of today's males lived in Africa between 35,000 and 89,000 years ago, according to a contested DNA analysis.
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Two aspects of sleep share a master
A molecular connection between the timing of sleep—a part of circadian rhythms—and how long animals slumber each day is demonstrated for the first time.
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Milked enzyme thwarts muscle disorder
Using an enzyme made in rabbit's milk, scientists have successfully treated a rare genetic disorder.
- Health & Medicine
New test may spot colon cancer early
An experimental test for colon cancer may detect the disease at a treatable stage more accurately than current, noninvasive screening techniques.
- Health & Medicine
Mutation linked to sinus infections
People who have frequent sinus infections are more likely on average to carry one copy of the same genetic mutation that causes cystic fibrosis, even though they don't have that disease.
