Tag: "pair" at biology news
New research shows plants can shuffle and paste gene pieces to generate genetic diversity
... existing genes followed by mutation of one of the pair
until it evolves into another function, though this is not the usual fate because the duplicate copy usually mutate into oblivion." The discovery of thousands of Pack-MULEs in the rice genome indicates that this may be an important mechanism to...
Wisconsin scientists develop quick botox test
...e University of Wisconsin-Madison have developed a pair
of rapid-fire tests for botulinum toxin, a feat that could underpin new technologies to thwart bioterrorism and spur the development of agents to blunt the toxic action of the world's most poisonous substance. Writing this week in the Proceedings of ...
Popular Science announces Third Annual 'Brilliant 10'
... relying on the natural tendency of DNA strands to pair
together like a zipper. Capitalizing on this, Liu is able to program the outcome of chemical reactions--before combining his raw materials, he attached each to a strand of DNA, attaching the ingredients he wants to react to complementary bits of DNA....
Human chromosome 5 final sequence analysis released to public
...ion makes it impossible for the two chromosomes to pair
up when the cell divides to create sperm and eggs. Over time, that incompatibility could have driven a reproductive wedge between the evolving populations. Moving evolutionarily further away, about one-third of chromosome 5 is similar to a chicken c...
European common frog found to use novel mating strategy
...p her, the surrounding males will often jostle the pair
in an attempt to dislodge the male. After as much ... time, however, various males typically follow the pair
around the pond and, after the female has laid the eggs and the parents have left, embrace the clutc...
There and back again
...er 14 issue of Developmental Cell, describes how a pair
of intracellular molecules affects the ability of ...c mesoderm, from which somites form, consists of a pair
of strips made up of mesenchymal cells running down the embryo's back. After the boundaries of an in...
Spontaneous mutation produces new MAO A/B knockout mouse
...spontaneous mutation in a single nucleic acid base pair
in the MAO A gene created a premature stop which p...erestingly," says Dr. Shih, "a similar single base pair
mutation occurs in the MAO A gene in the men of a Dutch family who show impulsivity and aggressive b...
Breaking new ground in germ cell guidance
...guing new model of germ cell migration involving a pair
of guidance molecules, Wunen and Wunen2, and their discrete activities in germ and somatic cells. The study began with a screen for mutant flies, which uncovered a phenotype in which the flies' primordial germ cells, called "pole cells," showed defec...
Recent evolution at a single gene may have brought down heart disease risk in some human groups
...t on the evolutionary history of a single DNA base pair
that has been shown to influence heart disease. Th...netic trait under study concerns a particular base pair
of DNA one of billions in the human genome that helps regulate the gene stromelysin-1, or MMP-3. T...
Optimizing protein's 'death domain' halts leukemia in laboratory study
...ificial amino acids were linked to each other by a pair
of hydrocarbon subunits. Like a reinforcing metal staple, Walensky explains, these links held the peptide in its natural coiled configuration. Further experiments confirmed that the stapled BH3 alpha helix retained its biological activity. In fact, i...
How an insidious mutation fools DNA replication
...t adenine nucleotide, it looked like a normal base pair
in how it interacted with the polymerase." The res...it. Also, they found, if the 8-oxoguanine-cytosine pair
manages to pass through the polymerase, the distortion disappears, meaning that the chemically flawe...
Integrative biology of exercise APS Intersociety meeting October 6-9, 2004 in Austin
... Austin, Texas. The three-day meeting features six pair
of concurrent symposia, representing 50 speakers and papers, plus four hours each day to network and discuss the 330 volunteered papers submitted by researchers from around the world that will be presented in poster sessions. "The submission of so ma...
Critically endangered monkey species plummets more than 50 percent since 1994
...the next decade, since they either lack a breeding pair
or have unsustainably tiny populations. When hunters kill a male critical for reproduction, for example, it spells annihilation for the entire group. Delacour's langur is threatened mostly from hunting. Poachers kill the animal not only for meat, but...
Using statistics to decipher secrets of natural mutation
... They focused their analysis on a 1.7 million base pair
DNA segment known as the "greater cystic fibrosis transmembrane conductance regulator region," which was sequenced in the 19 mammals by Eric Green and his colleagues at the National Human Genome Research Institute. To concentrate on the neutrally evo...
Social benefits of wound healing may not make any difference in animals with multiple partners
...lost this benefit, even if the mice in a separated pair
could still see each other through a screen. Wounds on the non-monogamous mice paired or unpaired healed just as quickly as the wounds on the paired, monogamous mice. "It suggests that the beneficial effects of social housing aren't equiva...
Save the rainforest - eat a tree
...eedlings, matched in 10 pairs. One species in each pair
normally lives on red clay soil, while the other species in the pair
was a closely related tree that normally lives on white sand soil. The researchers built 22...
Firefly compound lights up 'protein dance' in living animals
...e brightest were further tested to determine which pair
of fragments worked best. In a line of experiment...cientists genetically fused one member of the best pair
of luciferase fragments onto the protein targeted by rapamycin, attaching the luciferase fragment to...
LICR/UCSD team solves mystery of centromeres
...ll makes a duplicate copy of its chromosomes. Each pair
of identical chromosomes forms a centromere that holds them together in the center, like a cinched waist in an "X". From opposite poles of the cell, microtubules called spindle fibers, extend down to the centromeres and act as ropes to pull the cen...
Reaching for the gold
...lsion and balance control of older adults. And the pair
collaborate with Rick Naill, a musician and master teacher at the Colburn School of Music, and Anna Pattison and Peggy Tsutsui of the USC Dental School, who are training the next generation of dental hygienists. "If we understand an individual's bod...
Location of potential familial lung cancer gene discovered
...ed region corresponds to roughly a 20 million base pair
segment on the long arm of chromosome 6. The region contains numerous genes that are likely candidates for the susceptibility gene, including four suspected tumor suppressor genes. However, Wiest pointed out that "often you can discover a new funct...
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