genetic code – Shamskm: A site to exchange knowledge and solutions

Great ape genetic diversity catalog frames primate evolution and future conservation

By Guest PostJuly 5, 2013Natureafrica, aids, ashmael, barcelona, behavioral disorders, belinga, bornean orangutan, chimpanzees, cognitive, dna segment, eastern gorilla, evan eichler, future conservation, genetic code, genetic diversity catalog, genetic variation, genome sciences, geographic isolation, gorillas, great ape, great ape species, humans, indonesia, javier prado martinez, map, migration, model, orangutans, origin of hiv, peter sudmant, primate evolution, seattle, simian immunodeficiency virus, siv, spain, suzie a, tomas marques bonet, universitat pompeu fabra, university of washington, virus, western lowland gorilla

A model of great ape history during the past 15 million years has been fashioned through the study of genetic variation in a large panel of humans, chimpanzees, gorillas and orangutans. The catalog of great ape genetic diversity, the most comprehensive ever, elucidates the evolution and population histories of great apes from Africa and Indonesia. The resource will likely also aid in current and future conservation efforts which strive to preserve natural genetic diversity in populations.

More than 75 scientists and wildlife conservationists from around the world assisted the genetic analysis of 79 wild and captive-born great apes. They represent all six great ape species: chimpanzee, bonobo, Sumatran orangutan, Bornean orangutan, eastern gorilla, and western lowland gorilla, and seven subspecies. Nine human genomes were included in the sampling. (more…)

Genomic Detectives Crack the Case of the Missing Heritability

By Guest PostFebruary 23, 2013Scienceantibiotics, bert vogelstein, caffeine, case, caused by mutation, common dna spelling, crohns disease, dna code, dna variation, drugs, environmental factors, eye color, family traits, genetic causes, genetic code, genetic factors, genomic detectives, gwas, ian ehrenreich, joshua bloom, leonid kruglyak, metal compounds, missing heritability, missing heritability problem, model organism, patterns of inheritance, physical characteristic, princeton university, regions of dna, researcher, risk, risk of diseases, schizophrenia, southern california, thuy lan lite, type 2 diabetes, university, variation, wesley loo, yeast cell

Despite years of research, the genetic factors behind many human diseases and characteristics remain unknown. The inability to find the complete genetic causes of family traits such as height or the risk of type 2 diabetes has been called the “missing heritability” problem.

A new study by Princeton University researchers, however, suggests that missing heritability may not be missing after all — at least not in yeast cells, which the researchers used as a model for studying the problem. Published in the journal Nature, the results suggest that heritability in humans may be hidden due only to the limitations of modern research tools, but could be discovered if scientists know where (and how) to look. (more…)

Nanopore Sequencing: DNA Prefers to Dive Head First into Nanopores

By Guest PostJanuary 18, 2013Sciencebertrand duplantier, de gennes, derek stein, dna molecules, gelatin molecules, genetic code, mirna mihovilovic, molecule entropy, molecule zipping, molecules of dna, nanopore sequencing, nanopores, nick hagerty, nucleotide base, pierre gilles, polymer network, sensor, solid state nanopores, theory of jello

In the 1960s, Nobel laureate Pierre-Gilles de Gennes postulated that someday researchers could test his theories of polymer networks by observing single molecules. Researchers at Brown observed single molecules of DNA being drawn through nanopores by electrical current and figured out why they most often travel head first.

PROVIDENCE, R.I. [Brown University] — If you want to understand a novel, it helps to start from the beginning rather than trying to pick up the plot from somewhere in the middle. The same goes for analyzing a strand of DNA. The best way to make sense of it is to look at it head to tail.

Luckily, according to a new study by physicists at Brown University, DNA molecules have a convenient tendency to cooperate. (more…)

Alex Papan: “Friday……fry THE day”

By ShamsJanuary 15, 2013Short storiesalex papan, alien planets, all bohemian street, benjamin steiger, benti, berin fatman, bill the gatekeeper, bullet train, chinese wings, ciudad juarez, doner kebab, friday, fry the day, genetic code, genetic pundits, help the addicts, julia halleprova, mexican drug lord, miss chihuahua, nana chameleon nuskin, orion restaurant, puppenfest, selsa mirella velderado, tabla ahmed, wanted but alive

Alex took some free days – five days plus two weekends. He is not sure whether he will count this Friday too. He left office at thirty past ten. Boss didn’t say anything. Alex always makes some extra hours in week to keep it for Friday’s. Naahhh….intelligent…….Alex laughed… (more…)

Cracking the Oyster’s Code

By Guest PostSeptember 23, 2012Natureair exposure, analysis, atlantic, bioengineering project, cell, death, delaware, DNA, dynamic environment, evolution, factor, genetic code, genome, genome project, gulf coast, heat shock, immune response, oyster, pacific oyster, parasites, pathogen, patrick m gaffney, stress, survival, temperature fluctuation, toxic chemical, toxic metal, university

International team of scientists finds adaptations to stress in oyster genome

When it comes to stress, oysters know how to deal. The tough-shelled mollusks can survive temperature fluctuations, toxic metals and exposure to air, and a new study of their genetic makeup is helping to explain how.

An international team of scientists, including the University of Delaware’s Patrick M. Gaffney, professor of marine biosciences, sequenced the genome of the Pacific oyster, Crassostrea gigas, in a Nature paper published on Sept. 19. (more…)

More Than Matters of the Heart

By Guest PostJuly 18, 2012Health, Sciencecause of death, chronic disease, complicated grief scale, death, genetic code, genetic variation, Germany, hannover medical school, Health, inflammation, journal brain, los angeles, mary frances oconnor, pro inflammatory, spouse, stress, symptoms of loss, university of arizona, university of california, university of ulm, widowhood effect

A team of researchers, including Mary-Frances O’Connor at the UA, has found a genetic variability linked to stress and inflammation that may impact the health of some widows and widowers.

The death of a spouse can be one of life’s most distressing events, and for many years bereavement researchers have noted increased mortality risk in some widows and widowers. This has been called the “widowhood effect.”

Researchers at the University of California, Los Angeles, the Hannover Medical School in Germany, the University of Ulm in Germany and the University of Arizona have found a genetic variability linked to stress and inflammation that may impact the health of some widows and widowers. (more…)

UCLA Scientists Discover How Key Enzyme Involved in Aging, Cancer Assembles

By Guest PostJune 21, 2012Healthassembly of telomerase, chromosomal caps, degradation of dna, double helix, genetic code, la motif proteins, live forever, telomerase rna

UCLA biochemists have mapped the structure of a key protein–RNA complex that is required for the assembly of telomerase, an enzyme important in both cancer and aging. (more…)

Timely Ends: Telomere Length in Early Life Predicts Lifespan

By Guest PostJanuary 14, 2012Scienceblood cells, britt heidinger, cells, chromosomes, conditions, DNA, dna protection, environmental factors, exeter, function, genetic code, jon blount, lifespan, malfunction, plastic caps, predictor of longevity, telomere cap, telomere lengths, telomeres, universities of glasgow, zebra finches

New research by a team from the Universities of Glasgow and Exeter shows that a good indicator of how long individuals will live can be obtained from early in life using the length of specialised pieces of DNA called telomeres.

Telomeres occur at the ends of the chromosomes, which contain our genetic code.

They function a bit like the plastic caps at the end of shoelaces by marking the chromosome ends and protecting them from various process that gradually cause the ends to be worn away. This method of DNA protection is the same for most animals and plants, including humans, and the eventual loss of the telomere cap is known to cause cells to malfunction. This study is the first in which telomere length has been measured repeatedly from early in life of an individual and then for the rest of their natural lives. The results show that telomere length in early life is strongly predictive of lifespan. (more…)

Tag Archives: genetic code