variant 2 5

Tag: "variant" at biology news

Researchers identify gene involved in dog size

...stitutes of Health (NIH), has identified a genetic variant that is a major contributor to small size in dogs....entification and characterization of a key genetic variant that accounts for differences in dog size is particularly exciting because the underlying gene is pr...

Gene found for rare disorder may reveal new pathway in mental retardation

...gene, but who were judged to have CdLS or a milder variant of the disease, based on evaluations by clinical geneticists. Of the 115 patients, 11 had mutations in the SMC1A or SMC3 gene. All had some degree of mental retardation, but none had limb abnormalities. Five of the 11 patients had normal height, ...

Gene tests and brain imaging reveal early dementia

...ne person in five carries a genetically determined variant of APOE that is associated with an increased risk of Alzheimer's. In her study, Johanna Lind was able to show that some of the people in this risk group had reduced parietal lobe activity, detectable using an MR camera, and that these same people ...

Study suggests some drug resistance to influenza B medications

...apy were analyzed. The researchers identified a variant with reduced drug sensitivity in one (1.4 percent) of the 74 children who had received oseltamivir, and seven (1.7 percent) of the 422 influenza B viruses isolated from untreated patients were found to have reduced sensitivity to zanamivir, oseltamiv...

UCLA AIDS Institute researchers find a peptide that encourages HIV infection

...4 cells with HIV-1 by about 95 percent, the RC-111 variant enhanced viral infection five-fold. There are three structural varieties of peptides, also known as defensins ?alpha, beta and theta, Lehrer said. Humans have only alpha and beta; monkeys have all three. "Here's a peptide whose normal structur...

Survival of the rarest: Fruit flies shed light on the evolution of behavior

...common in nature. "In the case of fruit flies, one variant encourages the survival of the other. In essence, there is not one best type of fly," he says. If this process is common in nature, it may offer one explanation for why individuals, in general, vary so much from one to another in almost all species. ...

'Personality-gene' makes songbirds curious

...e neurotransmitter dopamine. Birds with a specific variant of this dopamine receptor D4 gene show a stronger exploratory behaviour than individuals with other variants (Proceedings of the Royal Society London B, 2 May 2007). There is already evidence that variations (polymorphisms) in neurotransmitter-rel...

Gene responsible for common hearing loss identified for first time

...s Thys told the conference. “The gene in which the variant is located points to a pathway that contributes to...ence, we were also able to show that a more active variant of this gene is protective against the disease.”...

In mice, drug protects against diabetes and atherosclerosis

...sue tests revealed that many of the subjects had a variant of the aP2 gene that sharply reduced production of...isorder, fatty liver disease. While the genetic variant studies in humans indicate that a drug like the one used in the current experiments is likely to wor...

One species, many genomes

...pecially designed statistical methods, including a variant of machine learning. The result of this painstaking analysis: on average, every 180th DNA building block is variable. And about four percent of the reference genome either looks very different in the wild varieties, or cannot be found at all. Almos...

1 2 3 4 5