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Tag: "junk" at biology news

Scientists uncover clues to the mystery of 'gene deserts'

...nd fend off infringement by repetitive segments of junk DNA, are home to a surprisingly large fraction of the genome's non-coding regulatory elements. "There are many indications that stable gene deserts represent treasure boxes of multiple gene regulatory elements, guarding the proper complex func...

Draft sequence of chicken genome completed

...g regions but we were surprised at how much of the junk DNA was almost identical in mouse and human. This ...gions of humans that were previously thought to be junk DNA. They don't code for RNA or for protein and their function is still a complete mystery, but they...

Scientists decipher genome of bacterium that helps clean up major groundwater pollutants

... under a microscope, the tiny organism looked like junk to me," says Zinder. "I never dreamed I'd some day we'd know the genome sequence of that 'junk.' " Today, environmental consulting companies are using Dehaloccocoides cultures to assure remediation at numerous sites contaminated by PCE or TCE by on...

Rodent social behavior encoded in junk DNA

... these repeating sequences once dismissed as mere junk DNA in the gene that codes for a key hormone rece...the vasopressin receptor gene. "It was considered junk DNA because it didn't seem to have any function," noted Hammock. Each animal species has its own si...

Junk DNA shapes social behavior

...ingly non-functional DNA, sometimes referred to as junk DNA. The finding by researchers at the Yerkes Nati...versity's School of Medicine, examined whether the junk DNA, more formally known as microsatellite DNA, associated with the vasopressin receptor gene affect...

Microbe has huge role in ocean life, carbon cycle

... organic matter. "By comparison, humans are mostly junk DNA, with large parts of the human genome having no important function," Giovannoni said. This type of genome streamlining, researchers say, appears to be a major factor in the evolutionary success of SAR11, which they believe may have been thriving...

TV ads market junk food to kids, new study finds

...andscape" in television advertising is packed with junk food, according to a new study. The study by researchers at the University of Illinois at Urbana-Champaign is the first to explore the nutritional composition of foods advertised to children using Nutrition Facts labeling. Nutrient-poor high-sugar ...

Genetic research at Children's Hospital of Pittsburgh reinforces theory of evolution

...ion is that an Intelligent Designer would not make junk DNA, so if a pseudogene does have a function, this is claimed to support the idea of an Intelligent Designer," Dr. Nicholls said. "But there is no evidence that any of the 20,000 pseudogenes are functional. Our research proves this Makorin pseudogene...

What's shaped like a pear and has two genomes? Check the pond

... packaged bunch of coding genes, free of so-called junk DNA (noncoding sequences and other extraneous genetic elements) that litter the genomes of many organisms. "Publication of the Tetrahymena genome marks the culmination of a remarkable collaboration within the research community," said Anthony Cart...

Researchers discover that sheep need retroviruses for reproduction

...ntists believed these endogenous retroviruses were junk DNA, he said. "Indeed, these endogenous retroviruses are usually harmless and generally contain mutations that prevent them from producing infectious retroviruses," he said. However, several endogenous retroviruses appear to provide protection fro...

University of Iowa scientists explore function of 'junk DNA'

...previously known, they also found that some of the junk DNA is not junk at all, but instead consists of sequences that can generate microRNAs. Davidson and her colleagues...

Peering into the shadow world of RNA

...NA that do not code for any genes long considered junk DNA may in fact be serving vital duty by governin...late with non-coding regions of DNA, the so-called junk DNA. One reason for this, Nishikura and others speculate, may be that the majority of these non-co...

Study identifies multiple genetic risk factors for prostate cancer

...ions of genes, in regions previously designated as junk DNA. "The discovery of multiple, independent genetic changes that are in close proximity to one another, but outside of any known gene, suggests that these results may also teach us about novel molecular mechanisms whereby DNA changes can alter risk ...

Where is the proton? Yale scientists discover footprints of shared protons

...nature is often thought to comprise the continuous junk background in the vibrational spectra of protonated samples." "When we cool the isolated systems, the protons sing out their sharp vibrational frequencies, and therefore provide clear signatures that are characteristic of each kind of interaction,...

'Junk' DNA now looks like powerful regulator, Stanford researcher finds

...arge swaths of garbled human DNA once dismissed as junk appear to contain some valuable sections, according to a new study by researchers at the Stanford University School of Medicine and the University of California-Santa Cruz. The scientists propose that this redeemed DNA plays a role in controlling whe...

Researchers publish first marsupial genome sequence

...not contain genes and that many had referred to as junk DNA until recently. Researchers now know that junk DNA may contain regulatory elements that influence the activity of nearby genes, but the full extent...

New findings challenge established views about human genome

...set of discrete genes, along with a vast amount of junk DNA that is not biologically active. The new data indicate that the genome contains very little unused sequences; genes are just one of many types of DNA sequences that have a functional impact. The consortium identified many previously unrecognized ...

New findings challenge established views on human genome

...crete genes, along with a vast amount of so-called junk DNA that is not biologically active. The new data indicate the genome contains very little unused sequences and, in fact, is a complex, interwoven network. In this network, genes are just one of many types of DNA sequences that have a functional im...

Mutating the entire genome

...ho you ask, although probably at least half of the junk DNA is going to end up having a pretty important function, Capecchi says. Capecchi is known for developing gene targeting, in which mice are bred with a gene disabled or knocked out to see what goes wrong, thus revealing the genes normal function ...

One man's junk may be a genomic treasure

...ently begun to speculate that whats referred to as junk DNA the 96 percent of the human genome that doesn...ave discovered one important function of so-called junk DNA. Genes, which make up about four percent of the genome, encode for proteins, the building bloc...

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(Date:11/23/2009)...ated strain of the deadly superbug MRSAan infectio...oticsposes a far greater health threat than previo...ccording to a study in the December issue of Emer...easily picked up in fitness centers, schools, and ...burden of MRSA within hospitals, the report found....
(Date:11/23/2009)...tion Society says that western lowland gorillas li... of the "mother lode" of more than 125,000 gorilla...reatened by growing humans activity in the region....forests adjacent to the southwest border of Lac Tl...that high densities of the great apes still exist ...
(Date:11/23/2009)...s "incontrovertible evidence" that the volcanic su...t 73,000 years ago deforested much of central Indi...s report. , The volcano ejected an estimated 800...ing a crater (now the world,s largest volcanic lak...ide. Ash from the event has been found in India, t...
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