Tag: "pairs" at biology news
Penguins march into new park
...esting and feeding ground for some quarter million pairs
of Magellanic penguin, estimated to represent 20 percent of the entire species. The park includes more than 40 small islands, which support the only two nesting colonies of southern giant petrels on the entire Patagonian coast, as well as the only co...
Genetic factors strongly shape how peers are chosen
...group deviance among approximately 1,800 male twin pairs
from mid-childhood to early adulthood, between 1998 and 2004. The twin pairs
that participated in this study were from the Virginia Twin Registry. The Virginia Twin Registry, no...
Biologists at Tufts University discover 1 reason why chromosomes break, often leading to cancer
...lculating the twist angle between consecutive base pairs
and found that there were several points of high flexibility, suggesting that the flexibility was connected to the fragility. Freudenreich and Zhang used yeast artificial chromosomes to test this idea because it allowed them to look at the region ...
New grants bolster efforts to generate faster and cheaper tools for DNA sequencing
...s as much as $5 million to sequence 3 billion base pairs
the amount of DNA found in the genomes of humans ...pyrosequencing method utilizes unmodified DNA base pairs
and polymerases to synthesize DNA and a firefly enzyme to generate a chemiluminescent signal. Ji...
Hepatitis C helicase unwinds DNA in a spring-loaded, 3-step process
...he DNA unwound in discrete jumps: Three nucleotide pairs
(base pairs) had to be unhitched from one another before an unwinding event occurred. Its like youre adding tension to a spring, said U. of I. physics professor Taekjip Ha, a researcher on the study and an affiliate of the Institute for Genomic Bio...
...ue. Possible applications for such smart surface pairs
include microelectromagnetic components (actuators), components for microfluidic systems, or carriers for pharmacological agents that could release their cargo under specific physiological conditions....
Charting ever-changing genomes
...corn, which might have as many as 2.5 billion base pairs
of DNA and the human genome with roughly 3 billion...pairs, Arabidopsis only has about 120 million base pairs
of DNA. With nowhere to run, plants are under constant threat from heat, cold, high acidity or sa...
Jefferson scientist's patent dramatically improves
... According to Dr. Brody, the patent hinges on the pairs
finding, through trial and error, that the compound lithium boric acid in DNA electrophoresis is the optimal solution for this process. -more- Faster DNA separation -- 2In electrophoresis, solutions conduct electric current necessary to separate ne...
Ability to listen to 2 things at once is largely inherited, says twin study
...e years 2002 through 2005. A total of 194 same-sex pairs
of twins participated in the study (138 identical pairs
and 56 fraternal pairs), representing ages 12 through 50. All twins received a DNA test to confirm w...
Clues to future evolution of HIV come from African green monkeys
...pecies. The relative ages and information on which pairs
of SIVagm were most closely related revealed the probable transmission route of SIV. The researchers hypothesize that the infection started in the westernmost species, sabaeus monkeys, moved east into neighboring tantalus monkeys, and then took one...
Unraveling the physics of DNA's double helix
...ngle strands of DNA that wind around each other in pairs
to form the complete, double-stranded molecules. The work was supported by the National Science Foundation and the National Institutes of Health. Each DNA strand includes a sugar and phosphate "backbone" attached to one of four bases, which encode ...
Sour taste make you pucker? It may be in your genes
...the journal Chemical Senses, researchers tested 74 pairs
of monozygotic (MZ, identical) twins and 35 pairs
of dizygotic (DZ, fraternal) twins to determine the lowest concentration needed for each twin to cor...
Neutral evolution has helped shape our genome
...ning the same repetitive sequence of chemical base pairs
several hundred times. Katsanis and his team first stumbled onto one type of repeat element while looking at genes associated with Bardet Biedl syndrome, a rare disorder of substantial interest to the lab. While hunting for new genes, they found p...
Penn researchers discover how microRNAs control protein synthesis
... protein production. When the miRNA-Ago2 complex pairs
with a messenger RNA, Ago2 engages the cap of the RNA, explains Kiriakidou. We believe this results in competition with eIF4E and disrupts the normal initiation process of protein synthesis. By improving understanding about how miRNAs control prot...
JCI Table of Contents -- July 2, 2007
... at maximal efficiency. Hemoglobin is comprised of pairs
of alpha- and beta-globin chains in combination with heme. Recently, the small alpha hemoglobinstabilizing protein (AHSP) was identified and found to specifically bind to and stabilize alpha-globin, limiting the toxic effects of excess alpha-globin i...
Time-lapse recordings reveal why IVF embryos are more likely to develop into twins
... Embryology today (Monday 2 July) that about three pairs
of twins per thousand deliveries occurred as a res...d been transferred to the mother (approximately 21 pairs
per thousand deliveries). However, it was not known why this happened. Using 33 surplus frozen-tha...
Discovery could help bring down price of DNA sequencing
...complete personal genome -- all three billion base pairs
of his DNA code sequenced. The cost was $1 million, and the process took two months. A million dollars for a map of all your genes is way out of reach for most people. The National Institutes of Health would like to bring it down to $1,000 by the y...
Breast cancer prognosis runs in the family
...ernational team, identifying 2,787 mother-daughter pairs
and 831 sister pairs
among women with breast cancer diagnosed between 1961 and 2001 from Swedens national Multi-Generatio...
Psychiatric Genomics Center established at Cold Spring Harbor Laboratory
...ts as possible at the level of the individual base pairs
of DNA. The new Center at CSHL will allow world-renowned geneticists and molecular biologists to apply the most powerful technology and to access appropriately selected DNA samples. We are confident that our investment in CSHLs mission oriented r...
CU study reveals why starling females cheat
...arlings are cooperative breeders, meaning breeding pairs
get help in raising chicks from other family group members.) This additional male then also acquires food and tends to the nestlings, which increases the chicks' survival rates. While females often leave the group when young, most males live their ...
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