Tag: "segments" at biology news

Harbor Branch Web Developers Team With ABC News To Bring Ocean Adventure To A Computer Near You

...be sendingdaily dispatches, audio clips, and video segments of these real-life (notstaged) adventures as they happen, and also will attempt to convey what life islike aboard leading-edge research vessels, whether in the labs or sitting downto sample the shipboard food. According to Mark Bryant, Science Produc...

Harbor Branch Web Developers Bring Adventures @Sea To Every Desktop

...be sendingdaily dispatches, audio clips, and video segments of these real-life (notstaged) adventures as they happen, and also will attempt to convey what life islike aboard leading-edge research vessels, whether in the labs or sitting downto sample the shipboard food. Visitors to the site will see far-away p...

Multicomponent Malaria Vaccine Shows Promise in Laboratory Tests

...lstages of its life cycle. The scientists combined segments of 21 different P. falciparum proteins to forma single recombinant protein, which they used to immunize rabbits. Each of the21 segments, or peptides, was selected because it was recognized by the immunesystems of people with malaria, as shown in ear...

Gene Study Shows Turtles Are Next Of Kin To Crocodiles And Alligators

...search included 24 genes from the nucleusand 9 DNA segments from the mitochondria of reptile cells. "The results providestrong evidence that the turtle is the crocodile's closest living relative,"Hedges concludes. Because the ultimate goal of both anatomical studies and gene studies is to findthe proper pl...

Brain Building May Depend On DNA Cutting And Pasting

... imagine simpler things like molecularswitches-DNA segments that are flipped or deleted to turn genes on and off in anirreversible fashion-which in turn could result in differentiation of progenitornerve cells." To arrive at their findings, Alt and his colleagues bred mice lackinggenes for the two pas...

Software Helps Decipher Genomes Of Higher Organisms

... pylori. There were no experimentally studied segments of M. jannaschii available to train the Markov models, upon which gene prediction is based in GeneMark. So the new program "learned Markov models from anonymous sequences based on the grammar of the genetic code," Borodovsky said. Bo...

Children need their own dietary guidelines, say experts

...d adversely affecting nutritionally vulnerable age segments such as children and older adults." * the need for messages concerning dietary guidance to be positive, emphasizing a healthy diet rather than labeling certain foods as "bad" or creating fear about eating specific foods or categories of foods. To...

Ancient "Jumping DNA" May Have Evolved into Key Component of Human Immune System

...at, the immunesystem uses a smaller number of gene segments that can be shuffled and joined toone another to produce many distinct combinations. Each recombinationessentially produces a new gene, and provides an almost infinite database ofgenetic information from which to generate antibodies and T-cell recept...

Genetic Clue Found To The Leading Cause Of Blindness In The United States

...ration gene. The technique involvescomparing short segments of DNA from affected and unaffected individuals. Theaffected individuals share variations in their genetic material that are notfound in the general population. "Starting with a genome-wide search, we narrowed down the location ofthe gene i...

Putting A Price Tag On Pollution

...with fluids, then moves upthrough larger andlarger segments of earth. Ghanem's next goal is to develop computer software that will allowbuilders and publicofficials to begin using his methods to make reliable predictions about thespread of pollution.When a builder picks a site for a new building, the so...

Fragmentation Of Tropical Forests Can Create "Genetic Bottleneck," According To New University Of Georgia Study

...is himself." The breakthrough came in using segments of DNA called microsatellites asspecific markers for S. globulifera. These markers allowed Aldrich and Hamrickto determine the pedigree for a number of seedlings and saplings in a onehectare forest fragment on their 38.5- hectare research area. (A he...

Molecular "Fossils" Of Early Life

...as precision scissors that can snip out flawedgene segments and splice in corrected versions -- a method that has potentialfor treating diseases ranging from cystic fibrosis to muscular dystrophy andsickle cell anemia. Because DNA lends itself well to test-tube evolution techniques, it canbe synthesiz...

Mouse Gene Reveals Clues To Human Deafness

... of mice and humans diverged millions ofyears ago, segments of their chromosomes contain the same genes. The comparisonled the geneticists to a mouse gene known to be crucial for normal developmentof mouse hearing. When the human form of the same gene was sequenced using DNAfrom hearing-impaired individuals...

Age Of Bacterial Meningitis Patients And Subtypes Of Disease Have Changed Substantially Within Past Decade

...gitidis are introduced and spread slowlyin certain segments of the population. Detecting these changes may improveunderstanding of meningococcal outbreaks and the ability to prevent them. ### Media Contacts: ...

Biological Clocks No Longer Found Only In The Brain

...clock genes rhythmically luminesced in each of the segments -- head, thorax and abdomen. The clock genes were especially conspicuous in chemosensory cells at the base of hairs on the legs and wings and on the antennae and proboscis. These clocks also ebbed and flowed autonomously in response to ligh...

Gene For Last Major Form Of Batten Disease Discovered

...en compared this enzyme to known proteins and gene segments thatare described in databases available through the National Center forBiotechnology Information at the National Library of Medicine. This allowedthem to determine the enzyme?s probable function. The newly discovered gene, CLN2, codes for a type ...

Evolution Re-Sculpted Animal Limbs By Genetic Switches Once Thought Too Drastic For Survival

...re. Homeotic, or Hox genes specify the identity of segments along the embryo's bodyaxis and regulate the forma...ked homeotic genes, Ubx and abdA, to show in which segments of the embryo thegenes are turned on. The Ubx-abdA genes--like other homeotic genes, includingthe on...

Scientists Identify Retrovirus-Like Components In Corn Genome

...f mobile DNA called retrotransposons. Though these segments of DNA are not part of the active genes in the cor...ind." Though scientists don't know how or why such segments of DNA accumulate in the genome, the fragments are thought to be generally harmless, Bennetzen says....

New Cancer Switch Discovered By Duke Medical Center Pharmacologists

...nd Pendergast discovered that if they truncate the segments of Abi-2 that fit cABL, then cABL becomes cancer-causing. In a companion paper in Genes and Development, Steven Goff of Columbia University has reported discovering a similar molecule, which he called Abi-1, in brain tissue. "We believe that these mo...

Enzyme's "Magic" May Hold Key to Anticancer and Antimicrobial Drugs

...', B', and C'. The two double-stranded DNA segments involved in the reaction (which can be part of much longer, linear DNA or interlocked, double-stranded rings) are represented by light and dark rods. In (1) topoisomerase II binds one segment of DNA, inducing a conform...

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