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Tag: "parent" at biology news

Researchers link two more genes to sudden infant death syndrome

...olymorphic ventricular tachycardia (CPVT). "For a parent whose infant died suddenly and mysteriously even five years ago, we were essentially unable to provide them with a cause and would often have to tell them, 'We have no idea why your apparently healthy infant did not wake up this morning,' " Dr. Acker...

Stable polymer nanotubes may have a biotech future

...rane. The nanotubes are then snipped free from the parent cell with an "optical scalpel" (highly focused ultraviolet laser pulse). The nanotubes maintain their shape even after several weeks of storage, and can be removed from the liquid solution and placed on a dry surface or in a different container. The ...

Evolution mystery: Spider venom and bacteria share same toxin

...his contrasts with vertical transfer of genes from parent to offspring. Cordes and Binford found a common structural motif at the end of both toxic proteins that is not found in any other proteins. Evidence for common ancestry (homology) of the toxins had previously been noted, but this uniquely shared str...

Two NIH initiatives launch intensive efforts to find roots of common diseases

...ases have a hereditary component, transmitted from parent to child through the three billion DNA letters that make up the human genome," said Francis S. Collins, M.D., Ph.D., Director of the National Human Genome Research Institute at NIH and chairman of the GAIN Steering Committee and co-chairman of the NI...

MiRNA fingerprint identified in platelet formation

...iesis, which generates megakaryocytes, or platelet parent cells. The research team used microRNA gene chip analysis to identify miRNA expression in normal stem cells and megakaryoctyes. They also studied miRNA expression patterns in four acute megakaryoblastic leukemia (AMKL) cell lines. They discovered ...

Researchers release new variety of asparagus

...emale plants. In the case of DePaoli, first a male parent and a female parent are selected for their good characteristics including spear size, spear quality, yield, and disease ...

U of MN researchers identify ataxia gene

...ia type 5 (SCA5) is a dominant gene disorder; if a parent has the disease, each of their children has a 50 percent chance of inheriting the mutation and developing ataxia sometime during their lifetime. The onset of SCA5 usually occurs between the ages of 30 and 50, but can appear earlier or later in life, ...

Study finds drug may cut down involuntary movements

...r years. Virtually everyone with the disease had a parent with the disease, and children of a person with Huntington's have a 50-percent chance of inheriting the disease. Thirteen years ago the gene that causes the disease was identified by scientists, and now a simple blood test can tell people whether t...

Same-sex mating by fungi spawned infection outbreak, evidence suggests

...uver Island are either siblings or that one is the parent and the other the progeny. "Given that the minor ...hor James Fraser, Ph.D., also of Duke. "The second parent strain remains to be discovered." Additional examination of the mating type locus provided evidence...

A new link between stem cells and tumors

...olled by events that happen prior to division. The parent cell becomes asymmetrical: it collects a set of special molecules, including Prospero and other proteins, in the area that will bud off and become the specialized cell. "This asymmetry provides the new cell with molecules it needs to launch new gene...

Many cats unaffected by catnip, C&EN reports

...haca, N.Y. A kitten with only one catnip-sensitive parent has a one-in-two chance of developing the sensitivity; if both parents have the sensitivity, the chances rise to at least three in four, she says. There is a chemical cause for the response to catnip (Nepeta cataria), available in pet shops as a raw...

From a Few Wild Ancestors, a Citrus Cornucopia

...crosses from breeding programs or mutations from a parent tree -- so they wouldn’t differ enough from other accessions to be surveyed. “About 50 of the 400 accessions represent more than 90 percent of the collection’s true diversity,?says Krueger. “That’s just 13 percent of the collection.?/p> That may...

Fluorescing lab worms signal longer life spans

...vels of the green fluorescent protein expressed by parent worms were not passed down to offspring and therefore not heritable, said Rea. Research suggests that humans possess several similar types of "stress-response" systems tuned to counter environmental insults like oxidative stress, pathogens, alcohol ...

New insights into how Huntington's disease attacks the brain

...mutation will develop the disease. Each child of a parent with Huntington's disease possesses a 50 percent risk of inheriting the illness. In the United States, the disease strikes 30,000 people and places another 150,000 persons at risk. The disorder affects males and females equally and crosses all ethnic...

Key mechanism in genetic inheritance during cell division identified

...echanism in the passing of genetic material from a parent cell to daughter cells appears to have been identified by a team of Berkeley researchers. Their study may explain how a complex of proteins, called kinetochores, can recognize and stay attached to microtubules, hollow fibers in the walls of biologica...

Potential treatments for neurofibromatosis

... occur spontaneously rather than being passed from parent to child. Everyone has two copies of the NF 1 gene, which produces a protein called neurofibromin that controls cell division. If both NF 1 genes are defective, not enough neurofibromin is produced, cell division takes off and tumors develop. "It's...

Plants defy Mendel's inheritance laws, may prompt textbook changes

...normalities carried by both parents. These mutant parent plants apparently have hidden templates containing...r Susan Lolle found that Arabidopsis in which each parent plant had two copies of a mutant gene could produce progeny that didn't show the parents' deformity,...

Circles Of DNA Might Help Predict Success Of Stem Cell Transplantation

...more T cells that are produced in the blood as the parent cells containing sjTRECs divide and produce daught... large number of stem cells have been converted to parent T cells--each of which targets a specific foreign substance, according to Rupert Handgretinger, M.D....

Scientists document complex genomic events leading to the birth of new genes

...cated genes, in combination with the corresponding parent gene, produce abnormally abundant quantities of transcripts. This overexpression often alters the fragile molecular balance of gene products on a cellular level, ultimately resulting in deleterious phenotypic consequences. If these duplicated genes a...

Scientists discover unique microbe in California's largest lake

...lly assumed that it is faithfully transmitted from parent tooffspring. However, in the case of this new microbe, it appears thatDNA encoding a small portion of the ribosomal gene in a proteobacteriumjumped across the vast evolutionary distance that separates theproteobacteria and cyanobacteria, and switched...

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