Tag: "repetitive" at biology news

Genes, neurons, and the Internet found to have some identical organizing principles

...me patterns in the networks were inexplicably more repetitive than they would be in randomized networks. This handful of patterns was singled out as a potential bundle of network motifs. Surprisingly, the team found two identical motifs in genetic and neural systems. "Apparently both information-processing syst...

Purdue veterinarian studies compulsive behavior in dogs

...EST LAFAYETTE, Ind. -- Dogs' quirky, unexplainable repetitive behaviors can be part of an anxiety condition know... to infection, and a dog that is so disturbed by a repetitive behavior may not be able to eat or drink....

Transposable elements in malaria mosquito genome may offer a tool for control of disease spread

...ong terminal repeats (non-LTR), short interspersed repetitive elements (SINEs), and miniature inverted repeat transposable elements (MITEs) within A. gambiae. The non-LTR and SINEs are RNA-TEs. MITEs are DNA-TEs. Using computer programs developed at Virginia Tech and freeware from NCBI, they have discovered new...

NSF funds $10.2m maize gene sequencing push

...aize genome is made up of a large amount of highly repetitive DNA including many mobile DNA elements. Unlike Arabidopsis genes, the maize genes are not spaced evenly throughout the genome but instead are clustered in "islands" floating in this large "sea" of repeat DNA. Together, the two projects will develop...

DNA evidence suggests 3 types of elephants roam Africa

...A sequences and nuclear microsatellite loci (short repetitive segments of DNA that show differences among populations and individuals) suggest the existence of "three recognizable taxa of African elephants," their results need to be confirmed before a formal taxonomic revision of the African elephants is propo...

A genetic contribution to obsessive compulsive disorder

...nted thoughts (obsessions) and the need to perform repetitive acts or rituals in order to alleviate the anxiety (compulsions). As an example, a patient who fears contamination would be afraid of touching anything and would feel that they must wash their hands over and over. The causes of OCD remain obscure. How...

Essential cell division 'zipper' anchors to so-called junk DNA

...eir surprise, the binding sites were found to be a repetitive DNA sequence found throughout the human genome for which no previous role had ever been identified. These bits of DNA, known as Alu sequences, are liberally represented along those vast stretches of the human genome not known to directly control gene...

Guns, bats, and cash

... toxin they were exposed to was minimal, even on a repetitive bases. Paul Cox, Director of the National Botanical Gardens in Kauai Hawaii, and Oliver Sacks of the Albert Einstein College of Medicine, first proposed a connection between the disease and flying foxes in a recent paper in the journal Neurology, w...

Scientists identify a new kind of genetic problem in muscular dystrophy

...s say. In a new study, they show that deletion of repetitive DNA sequences in people with this disorder allows ...ent of the disease. The findings also suggest that repetitive DNA sequences play a previously unsuspected role in human disease by influencing gene activity, Dr. ...

Pufferfish DNA yields clues to human biology

... identify genes that had been obscured by the many repetitive and non-coding sequences that make up about 97 percent of human DNA. Rokhsar noted that nearly three-fourths of the genes in the human genome have identifiable counterparts in Fugu, highlighting the shared anatomy and physiology common to all vertebr...

Pufferfish DNA yields clues to human biology

... identify genes that had been obscured by the many repetitive and non-coding sequences that make up about 97 percent of human DNA.Rokhsar noted that nearly three-fourths of the genes in the human genome have identifiable counterparts in Fugu, highlighting the shared anatomy and physiology common to all vertebra...

New metabolic 'switches' discovered

... the Gpb1 and Gpb2 subunits contain very divergent repetitive sequences of amino acids in key sections of their structures, compared to G protein beta subunits; however once they fold into their working shape, they still function similarly. Such evolution of different molecules or structures to have similar fun...

Molecular clues to an inherited epilepsy

...rocess is a way of safeguarding a cell from having repetitive firing," George said. In the case of the mutant so...leading to a state of hyperexcitability that makes repetitive firinga hallmark of seizure activitymore likely. "This minor defect is sufficient to render the cell...

New process makes genome sequencing more efficient

... and genome research," Paterson said. These highly repetitive sequences are, in essence, genetic junk, said Dani...wn a complex genome into three populations: highly repetitive (HR), moderately repetitive (MR) and single- or low-copy (SL) sequences. It's based on the principle...

Ten new candidate genes associated with salt sensitivity and hypertension are identified in rats

...imilarities between transcriptional profiles using repetitive hierarchical and non-hierarchical approaches to assign gene expression patterns to clusters. Clusters may then be compared by transcriptional profiles from different tissues, diseases or disease states, to identify common and distinguishing gene expr...

Findings conclude sustained caffeine intake negates the benefits of creatine supplements

...an body mass and improve performance in single and repetitive high-intensity, short-duration exercise tasks such as weightlifting, sprinting, and cycling. It is a popular nutritional supplement that is used by physically active people - from recreational exercisers to Olympic and professional athletes. Accordi...

Nexia and US Army spin the worlds first man-made spider silk performance fibers

...ragline silk is composed of proteins with multiple repetitive sequence blocks that impart its mechanical properties. Spiders can be coaxed to make silk, but attempts to create "spider farms" have failed because of the territorial nature of spiders. BioSteel is eco-friendly both in terms of its composition and ...

Respiratory activation in patients with obstructive sleep apnea syndrome (OSA)

... Sleep apnea/hypopnea syndrome is characterized by repetitive upper airway obstruction with ensuing cyclical hyp...tion (LTF). This excitatory mechanism occurs after repetitive stimulation of the carotid bodies as ventilation returns to baseline over a long duration, up to sev...

January media highlights-GSA Bulletin

...nd Charleston, however, there has been persistent, repetitive net downward or upward movement over the past 34 million years. These repetitive patterns of persistent motion are most readily attributable to tectonism. The spatial pattern of the...

Major stress during pregnancy linked to autism

... delay, and develop a narrow and repetitive pattern of behaviors. These behaviors typically stay with the child throughout his or her life. "With this information there will be other studies that can hopefully ...

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