Navigation Links
Tips from the journals of the American Society for Microbiology
Date:5/16/2011

s have used it most notably to trace the relationships among species far more accurately than can be done with conventional methods.

Sex chromosomes in animals are so ancientin the hundreds of millions of years old--that they retain few traces of the historical events that drove their evolution. But the researchers had found in earlier studies that the mating type chromosomes in the self-fertilizing fungus, Neurospora tetrasperma, which are analogous to X and Y in sexually reproducing organisms, have a region of suppressed recombination that is roughly as recent as the split between chimpanzees and homininsless than six million years old.

Suppressed recombination preserves the genomic landscape, because normally, chromosomes recombine during mating, which shuffles the genes like a deck of cards. But suppressed recombination also interferes with natural selection, by forcing genes to be selected or deselected in packages, like the packages of options on new cars that force you to buy the navigation system, the satellite radio, and the MP3 system if you want the side curtain airbags.

The Uppsala researchers' major discovery is that many preferred codons disappeared from regions of the mating type chromosomes where recombination was suppressed. Codons are the "words" of the genetic code. Different codons code for each of the 20 amino acids used in living systems. They code for amino acids, which are the building blocks of proteins, the molecules that form both most of the structure, and most of the machinery cells. Like words in human language, codons often have synonyms. But "Many organisms studied to date preferentially use a specific set of preferred codons which are believed to promote efficient and accurate protein synthesis," says corresponding author Hanna Johannesson. Thus, they are known as "preferred codons."

The suppressed recombination the researchers had found earlier in N. tetrasperma is accompanied by the loss of th
'/>"/>

Contact: Jim Sliwa
jsliwa@asmusa.org
202-942-9297
American Society for Microbiology
Source:Eurekalert

Page: 1 2 3 4 5 6

Related biology news :

1. Mycotoxin Research joins Springers life sciences journals program
2. Oxford Journals and the International Society for Computational Biology announce new partnership
3. Springer and Senckenberg society to collaborate on life sciences and geosciences journals
4. Highlights from the March editions of ESA journals
5. Three prominent Cell Press journals named among the 100 most influential journals in past 100 years
6. 3 prominent Cell Press journals named among the 100 most influential journals in past 100 years
7. Annals of the ESA selected as one of 100 most influential journals
8. Tips from the journals of the American Society for Microbiology
9. Tips from the Journals of the American Society for Microbiology
10. Tips from the Journals of the American Society for Microbiology
11. Tips from the Journals of the American Society for Microbiology
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/25/2014)... A study published online in the International ... novel approach to preventing cervical cancer based on findings ... after removal of a discrete population of cells in ... study that looked at squamocolumnar junction cells, or SCJ ... have been implicated as the origins of cervical cancer. ...
(Date:7/25/2014)... consume the healthcare community and remain priority ... To address the worldwide crisis of obesity ... global leaders in diabetes, epidemiology and public ... and development of diverse intervention programs in ... This book on "Global Health Perspectives in ...
(Date:7/25/2014)... complex congenital central nervous system disease that is ... tubes during the embryonic phase. Many patients have ... and neurocognitive retardation. Such problems decrease the patients, ... at Ankara Physical Medicine and Rehabilitation Education and ... children with SB, using the Pediatric Evaluation of ...
Breaking Biology News(10 mins):Clearing cells to prevent cervical cancer 2What constitutes an effective response to the global 'diabesity' tsunami? 2
... LAFAYETTE, Ind. - Just months after the soybean genome ... long-sought gene that controls the plant,s main stem growth ... of soybean plants that will allow producers to incorporate ... (Jen-Shin Ma), an assistant professor of agronomy, used the ...
... -- The National Academy of Sciences today announced the ... from 14 countries in recognition of their distinguished and ... held this morning during the business session of the ... today bring the total number of active members to ...
... , April 27 The "Great Reflation Experiment" ... the economy following the recent recession -- has been successful ... says Max Bublitz , chief strategist and portfolio manager ... of Virtus Investment Partners (Nasdaq: VRTS ), ...
Cached Biology News:Gene discovery may lead to new varieties of soybean plants 272 new members chosen by Academy 272 new members chosen by Academy 372 new members chosen by Academy 472 new members chosen by Academy 572 new members chosen by Academy 672 new members chosen by Academy 772 new members chosen by Academy 8Economic Headwinds a 'Very Big Deal' to Virtus Strategist 2Economic Headwinds a 'Very Big Deal' to Virtus Strategist 3Economic Headwinds a 'Very Big Deal' to Virtus Strategist 4
(Date:7/25/2014)... July 25, 2014 /PRNewswire-iReach/ -- Xybion Corporation, the ... global corporations operating in highly regulated industries, announced ... annual Global User Group Conference, Xybion International Exchange, ... Philadelphia, Pennsylvania at the Sheraton Society ... This year,s conference theme ...
(Date:7/24/2014)... novel combination of microscopy and data processing has given ... Laboratory an unprecedented look at the surface of a ... , The research team led by ORNL,s Zheng ... perovskite manganite, a complex material that exhibits dramatic magnetic ... behavior could benefit researchers who are interested in using ...
(Date:7/24/2014)...  ECC West Africa, LLC (ECC) signed a contract ... College Hospital (UCH) Ibadan Board of Management for the ... construct, and operate and maintain a new, state-of-the-art Cancer ... the first of the 4-phase project, ECC will conduct ... UCH Ibadan intends to finance and develop the Cancer ...
(Date:7/24/2014)... at the University of Delaware, is known worldwide ... engineering, environmental sustainability and electronics. , His early ... a well-defined, crystalline structure. At the atomic scale, ... zeolites can separate molecules with size differences of ... a nanometer), making them useful to the chemical ...
Breaking Biology Technology:Xybion Announces It Will Host International User Conference in Philadelphia 2Xybion Announces It Will Host International User Conference in Philadelphia 3ORNL study reveals new characteristics of complex oxide surfaces 2ECC Signs a Contract for the Finance, Design, and Construction of a Premier Cancer Institute in Ibadan, Nigeria 2University of Delaware researcher describes new approach for creating organic zeolites 2
... III schizophrenia study, -- In total, nine sales contracts signed since 1 ... ... -- $3 million in revenue already locked in for FY 2009, ... a contract with an international,pharmaceutical company to provide its computerized cognitive testing,technology and associated ...
... YORK, Aug. 11 Bion Environmental,Technologies, Inc. (OTC ... that its U.S. Patent application 11/106,751 entitled "Low ... patent,application was made on April 15, 2005; upon ... and will remain in force until December,26, 2021., ...
... TELK ) reported a net loss of $13.6 million, or ... compared with a net loss of,$14.3 million, or $0.27 per ... loss for the second quarter ended June 30, 2008, includes,a ... reflected in interest and other income (expense)., For the ...
Cached Biology Technology:Sales Contracts Worth $2.3 Million Signed Since 1 July 2008 2Bion Announces Approval of New U.S. Patent for Phosphorus Removal Process for Livestock Waste Environmental Treatment 2Bion Announces Approval of New U.S. Patent for Phosphorus Removal Process for Livestock Waste Environmental Treatment 3Bion Announces Approval of New U.S. Patent for Phosphorus Removal Process for Livestock Waste Environmental Treatment 4Telik Announces Financial Results For 2008 Second Quarter 2Telik Announces Financial Results For 2008 Second Quarter 3Telik Announces Financial Results For 2008 Second Quarter 4
... Varioskan is a high performance ... dispenser and incubator. With the advanced ... and reliability for drug discovery assay ... for fluorescence intensity, time-resolved fluorescence and ...
Strip Removal Tool 25/Box...
Oven mesh sheets, large, 23 x 23cm, pack of 5...
... Lambda Protein Phosphatase ... Mn2+-dependent protein phosphatase with ... threonine and tyrosine residues. ... amino-acid product of the ...
Biology Products: