Tag: "trait" at biology news

New sign language suggests children create language's fundamentals through learning

...r adults," Senghas said. The researchers studied a trait central to all developed languages called "discreteness," meaning that information is packaged into separate elements that can be put together according to various rules. For example, no matter what the language, it consists of words, which combine t...

Cockroach-like robot leads new research effort

...project to understand animals' most distinguishing trait - how they move without falling over. The National Science Foundation (NSF) announced today (Thursday, Sept. 16) a $5 million, five-year grant to the University of California, Berkeley, that will fund an all-star team of biologists, engineers and ma...

A liking for sweets, combined with novelty seeking, may predict alcoholism

...elements of behavioral undercontrol a personality trait that reflects an individuals inability or unwillin... Kampov has some evidence linking this personality trait with sweet liking to indicate a higher risk for alcoholism. Researchers examined 165 middle-aged pat...

Researchers report new gene test for isolated cleft lip and palate

...generalized to the broader public. "For a complex trait like cleft lip and palate, this is a nice step forward because there may be dozens of genes that contribute to the condition," said Murray....

Cell's gatekeeper for ammonia revealed in unprecedented detail

...aordinarily efficient at transporting ammonia -- a trait called "high affinity" that can be critical since the ammonia is highly toxic, Stroud said. Many neurological disorders, from seizures to stupor and coma, stem from overexposure to ammonia. Advanced liver failure disrupts central nervous system funct...

Hunting illusive signs of natural selection

...more, increasing the prevalence of that particular trait in the population. "To identify genes that were naturally selected, it is important to know the demographic history of the populations being studied," says Shriver. Researchers at Fred Hutchinson Cancer Research Center in Seattle created demographi...

Recent evolution at a single gene may have brought down heart disease risk in some human groups

...been shown to influence heart disease. The genetic trait under study concerns a particular base pair of DNA one of billions in the human genome that helps regulate the gene stromelysin-1, or MMP-3. The identity of the DNA base at this position differs between individuals and influences the rate of produc...

Researchers report new gene test for isolated cleft lip and palate

...generalized to the broader public. "For a complex trait like cleft lip and palate, this is a nice step forward because there may be dozens of genes that contribute to the condition," said Murray. Murray said the mutation that causes the cleft remains unidentified. The group is currently tracking it in ...

Rare mutations can significantly increase risk factor for heart disease

...rchers believed that the genetic component of this trait depended primarily on the cumulative effect of man... mutations that significantly influenced the final trait by focusing on individuals at the extreme ends of the spectrum of HDL levels. Using 128 subjects fro...

Prions act as stepping stones in evolution

...it with a survival advantage, the cell passes that trait on to its progeny. But when the daughter cells are... place, they can subsequently pass along this same trait without the prion--that is, the trait becomes fixed in the cell's lineage and no longer depends on t...

Evolvability could be a driving force in drug resistance

...lity -- the likelihood of genetic mutation -- is a trait that can itself be favored or disfavored through the process of natural selection. The results of the study appear in the Aug. 10 issue of Proceedings of the National Academy of Sciences . Researchers Michael Deem, the John W. Cox Professor of Bioen...

Depression traced to overactive brain circuit

...ggests that tryptophan depletion unmasks an inborn trait associated with depression. Alexander Neumeiste...ause of its ability to unmask what appears to be a trait marker for major depressive disorder, the researchers suggest that tryptophan depletion may be a use...

Study: Mothers turn fearless when peptide level drops

...igated the biological mechanisms that turn on this trait in new mothers. "We've known for a long time that fear and anxiety decrease with lactation," explains Gammie. "Maybe it's this decrease that allows mothers to attack during a situation that normally would evoke a fear response." Te...

Confidentiality of genetic databases questioned by Stanford researchers

...e researchers it funds to put genetic sequence and trait information in shared online databases. A 1996 federal law that governs medical privacy requires that research data be stripped of identifying information such as names, addresses and even the last three digits of a patient's ZIP code before it can b...

Experiment station researcher looking for missing links in corn

...titive yield grain. We want it to be a value-added trait that perhaps has good appealing characteristics. Farmers are not ready at this time for something that has the protein quality but is not a high-yielding variety." The research includes another component -- making a variety that is less susceptible ...

Survival strategies in nature

...Ecology report an exciting discovery about a plant trait that determines the composition of the herbivore community, which was made by genetically silencing different components of a signaling pathway that mediates induced resistance in a native plant, and planting these plants back out into their native h...

A gene that keeps species apart

...ge- specific functional divergence is an essential trait of these genes. (That is, the genes evolve different functions after the species diverge from their common ancestor.) While several such candidate genes have been identified in the fruitfly Drosophila melanogaster, none has been shown to display this...

Parting genomes: UA biologists discover seeds of speciation

... arizonae males. Because the hybrid male sterility trait depends on the mother's genetic heritage, Reed and...urther experiments demonstrated that the sterility trait is caused by more than one genetic change. "I think there are many genes--4 or 5 probably, maybe man...

Cranberry breeding program may soon bear fruit for growers

...ies as their first target because color is an easy trait to measure and growers identified it as a key issue. In fact, one grower from Pittsville, Wis., became so involved in developing ideas for the research program that he is listed with Zeldin and McCown on a HyRed patent. The patent was issued in 2003 ...

Maxygen subsidiary Verdia announces discovery and improvement of glyphosate tolerance gene

...l development of a novel glyphosate-resistant crop trait by scientists at Verdia and Pioneer Hi-Bred Intern...sed businesses through the application of advanced trait optimization methods. Verdia has validated the use of the MolecularBreeding TM directed evolution ...

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