Navigation Links
A new computational method for timing the tree of life
Date:11/6/2012

With its deeply embedded roots, sturdy trunk and dense profusion of branches, the Tree of Life is a structure of nearly unfathomable complexity and beauty. While major strides have been made to establish the evolutionary hierarchy encompassing every living species, the project is still in its infancy.

At Arizona State University's Biodesign Institute, Sudhir Kumar has been filling in the Tree of Life by developing sophisticated methods and bioinformatics tools. His latest research, which appeared on the advance online edition of the Proceedings of the National Academy of Sciences will uniquely enable scientists to analyze very large datasests to set time to the multitude of branching points (nodes) on the tree, each representing a point of species divergence from a common ancestor. The new method differs significantly from currently used techniques and excels in providing results of equal or greater accuracy at speeds of 1000 times or faster.

For the proper study of evolutionary history, two components are key: the relationships between organisms (known as phylogeny) and their times of divergence. As Kumar explains, the powerful technique for estimating the time of divergence between species was initially realized over four decades ago, when the concept of molecular clocks was introduced. Initially the idea rested on the assumption that alterations in either the amino acid sequences of proteins or the nucleotide sequences of DNA between various species accumulate at a uniform rate over time and can be used to evaluate divergence times. The resulting phylogenetic structure is known as a "TimeTree," that is, a tree of life scaled to time.

Prior to the use of molecular clocks, morphological changes between species were the primary means of identifying divergence times. Since then, molecular clocks have proved a vital tool for evolutionary biologists, supplementing the fossil record and providing a powerful means to time t
'/>"/>

Contact: Richard Harth
richard.harth@asu.edu
Arizona State University
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. GW announces creation of Computational Biology Institute to conduct integrated research
2. George Washington University Computational Biology Director solves 200-year-old oceanic mystery
3. New 3-D stem cell culture method published in JoVE
4. New methods for better purification of wastewater
5. More effective method of imaging proteins
6. New method for estimating parameters may boost biological models
7. New paper by Notre Dame researchers describes method for cleaning up nuclear waste
8. Scientists discover new method of proton transfer
9. Oceanographers develop method for measuring the pace of life in deep sediments
10. Notre Dame researchers using novel method to combat malaria drug resistance
11. Rapid method of assembling new gene-editing tool could revolutionize genetic research
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
A new computational method for timing the tree of life
(Date:12/17/2014)... 16, 2014 Valencell, a leader in performance biometric ... to industry leaders such as Intel, Jabra, Atlas, and ... wearable products. These products will be showcased at CES ... Vegas . "Our partners choose ...
(Date:12/11/2014)... , Dec. 09, 2014 Research and Markets ... ( http://www.researchandmarkets.com/research/twhjll/biometrics_market ) has announced the addition of ...  report to their offering. One major ... With continuous advances in technology, it is important to ...
(Date:12/10/2014)... You,ve been here before: you desperately need to sign into ... or the answer to your secret question. What,s your dog,s birthday? ... Hoyos Labs , a digital infrastructure security company, launches the ... that comes with usernames, passwords and PINs – 1U TM ...
Breaking Biology News(10 mins):Valencell PerformTek Biometrics Power the Most Accurate Wearables at CES 2015 2Biometrics Market in the APAC Region 2015-2019: Key Vendors are 3M Cogent, NEC, Safran and Suprema 2The Password is Finally Dead: Launch of 1U Mobile App Eliminates Need for All Usernames and Passwords 2The Password is Finally Dead: Launch of 1U Mobile App Eliminates Need for All Usernames and Passwords 3
... Company reports quarterly earnings and deepens customer relationships, ... (OTC Bulletin Board: BKYI), a leader in wireless ... its,financial results for the second quarter ended June ... for the three months ended,June 30, 2007 decreased ...
... at the Max Planck Institute of Developmental Biology and ... discovered that an autoimmune response, triggered by a small ... a viable offspring. Studying Arabidopsis thaliana, sometimes called ... paired together from a male and female, produced plants ...
... to target and destroy foreign infectious elements, but in the ... the immune system off to avoid damage to oneself by ... good model for the induction of an innate immune response, ... the flys immune response is more subtly regulated and produces ...
Cached Biology News:BIO-key Reports Second Quarter 2007 Results 2BIO-key Reports Second Quarter 2007 Results 3BIO-key Reports Second Quarter 2007 Results 4BIO-key Reports Second Quarter 2007 Results 5Auto immune response creates barrier to fertility; could be a step in speciation 2
(Date:1/22/2015)... Jan. 22, 2015  Transwestern | RBJ today announces the firm ... space for Shire a leading biopharmaceutical company, at Two Ledgemont ... RBJ,s Robert Richards , president, and Brian Cohen ... the entire five-floor building at 95 Hayden Ave. ...
(Date:1/22/2015)... (PRWEB) January 22, 2015 The laboratory ... that has witnessed a number of technological advancements due ... regulatory requirements, growing need to integrate healthcare systems, and ... ease challenges in system integration. Key players in the ...
(Date:1/22/2015)... January 22, 2015 zFlo Motion , ... to announce an exciting product from a new partner. ... solutions over the past 15 years, with offerings in the ... their 3D IMU system (inertial measurement unit), iSen, is opening ...
(Date:1/22/2015)... Diagenode, Inc., a leading global ... and complete solutions for epigenetics research, recently launched ... the need for manual processing. The new ChIPettor ... of histones or transcription factors and a semi-automated ...
Breaking Biology Technology:Transwestern | RBJ Advises Shire in 202,000 SF Lease, Creating Boston's Largest Suburban Biotech Campus 2Laboratory Information Management Systems Market is Expected to Reach $1,323.6 Million by 2019 - New Research Report by MarketsandMarkets 2Laboratory Information Management Systems Market is Expected to Reach $1,323.6 Million by 2019 - New Research Report by MarketsandMarkets 3Laboratory Information Management Systems Market is Expected to Reach $1,323.6 Million by 2019 - New Research Report by MarketsandMarkets 43D Motion Capture Just Got Easy 2Diagenode Launches Unique Semi-Automated Solution for Chromatin Immunoprecipitation 2
... (LSE: SHP,NASDAQ; SHPGY), announces that it has received a Paragraph IV Notice Letter,from Teva Pharmaceuticals USA, Inc. ("Teva") advising of the filing of ... ... , , ... ...
... 16 OrthoAccel Technologies, Inc. is among the over 100 companies and technology innovators from across the nation and around the world that will compete for top honors at the ... ... ... ...
... ... Dana-Farber/Harvard Cancer Center, Cell Signaling Technology, Harvard Medical School and Merrimack Pharmaceuticals collaborated ... to study efficacy in preclinical cancer models resistant to other targeted therapies. ... Cambridge, ...
Cached Biology Technology:Shire Receives INTUNIV (TM) Paragraph IV Notice Letter From Teva Pharmaceuticals 2Shire Receives INTUNIV (TM) Paragraph IV Notice Letter From Teva Pharmaceuticals 3Shire Receives INTUNIV (TM) Paragraph IV Notice Letter From Teva Pharmaceuticals 4OrthoAccel Technologies, Inc. Selected to Pitch at the 2010 WBTshowcase 2OrthoAccel Technologies, Inc. Selected to Pitch at the 2010 WBTshowcase 3OrthoAccel Technologies, Inc. Selected to Pitch at the 2010 WBTshowcase 4OrthoAccel Technologies, Inc. Selected to Pitch at the 2010 WBTshowcase 5'Cancer Research' Has Published a Paper on the Activity of MM-121, an ErbB3 Inhibitor, in Ligand-dependent Tumors 2
Many mammalian cell types and experimental situations create challenges for standard transfection experiments. The ViraPower Lentiviral Expression System overcomes these challenges with efficient...
Chlorine-36, 3.7 MBq, 100 uCi. 0.1-0.3 HCl.< 111 MBq/g Cl, < 3 mCi/g Cl.Dispensed to order. Please inquire for alternative pack sizes. Category: Radiochemicals &Radiation Safety, Radiochemicals....
1M stock solution (238mg/ml)...
...
Biology Products: