Navigation Links
Study sheds light on evolution of human complexity
Date:11/3/2009

y.

"These are the potential roots for the emergence of novel protein-protein interactions, which are the hallmark of evolution in complex, multicellular species," Lynch said. "In other words, the origins of some key aspects of the evolution of complexity may have their origins in completely nonadaptive processes."

Fernandez said the research reveals how increasingly specialized proteins can evolve. He drew an analogy to a business that hires two delivery drivers that initially cover the same parts of town but eventually specialize to deliver only to specific neighborhoods.

"Eventually, even if times become tough, you cannot lay off either of them because they each became so specialized that your company needs them both," he said.

The more simple a creature is, the fewer specialized proteins it possesses. Humans and other higher-order mammals need many specialized proteins to build the specialized tissues in their skin, skeleton and organs. Even more specialized proteins are needed to maintain and regulate them. This complexity requires that the duplicates of the original jack-of-all-trades gene be retained, but this does not happen unless selection is inefficient. This is frequently a point of contention between proponents of evolution and intelligent design.

Fernandez and Chen looked at duplicate genes across the human genome and found that the more poorly packed a protein was, the more likely it was to be distinguished through paralog specialization.

"This supports the case for evolution because it shows that you can drive complexity with random mutations in duplicate genes," Fernandez said. "But this also implies that random drift must prevail over Darwinian selection. In other words, if Darwinian selection were ruthlessly efficient in humans -- as it is in bacteria and unicellular eukaryotes -- then our level of complexity would not be possible."


'/>"/>

Contact: Jade Boyd
jadeboyd@rice.edu
713-348-6778
Rice University
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Childhood obesity indicates greater risk of school absenteeism, Penn study reveals
2. A study by the MUHC and McGill University opens a new door to understanding cancer
3. Study begins to reveal clues to the cause and progression of sepsis
4. Clones on task serve greater good, evolutionary study shows
5. New study warns limited carbon market puts 20 percent of tropical forest at risk
6. New study examines how rearing environment can alter navigation
7. Study links cat disease to flame retardants in furniture and to pet food
8. New continent and species discovered in Atlantic study
9. Study shows link between alcohol consumption and hiv disease progression
10. Feeling hot, hot, hot: New study suggests ways to control fever-induced seizures
11. Study finds environmental tests help predict hospital-acquired Legionnaires disease risk
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/19/2014)... (Boston) Some infants born with neonatal abstinence ... a more difficult time going through withdrawal than ... understood. While genetic and epigenetic (when genes are ... identified as potential factors, researchers at Boston University ... (BMC) conducted a first of its kind study ...
(Date:8/19/2014)... at San Antonio and The University of Texas at ... than $750,000 in grants through the San Antonio Life ... SALSI is a model of how a general academic ... forces for greater research and graduate education. , The ... public health issues and diseases of global impact. Funding ...
(Date:8/19/2014)... 19, 2014A new ovoid structure discovered in the Nakhla ... a variety of minerals, and shows evidence of undergoing ... of the permafrost and mixing of surface and subsurface ... of analytical studies to determine the origin of this ... this ovoid formed, point to the most likely conclusion, ...
Breaking Biology News(10 mins):In-utero methadone, Subutex exposure could alter gene expression, cause severe Neonatal Abstience Syndrome 2San Antonio Life Sciences Institute awards $750,000 to innovators 2San Antonio Life Sciences Institute awards $750,000 to innovators 3Life on Mars? Implications of a newly discovered mineral-rich structure 2
... Jerusalem, May 23, 2011 -- Research teams at ... Jerusalem have won a prestigious $300,000 award from the ... devoted to transformative science, The BSF defines transformative science ... radically change our understanding of an important scientific concept, ...
... May 22, 2011 -- Combining the cutting-edge technology of ... public health officials can get a more detailed picture ... stop them, say researchers today at the 111th General ... health agencies are now able to harness the power ...
... separate genetic lineages that were isolated from each other by ... U.S. Forest Service Pacific Northwest Research Station study. The ... a monthly publication of the stationcan assist efforts aimed ... "When most people think of the red fox, they ...
Cached Biology News:Research teams at Hebrew University, University of Kentucky win Israel-US science award 2Genomics and social network analysis team up to solve disease outbreaks 2Genetic study clarifies evolutionary origin of elusive montane red fox 2
(Date:8/18/2014)... 2014 According to a ... "Life Science Reagents Market(Products- PCR Reagent Kits, Cell ... Diagnostic Reagents and Others; End Users- Commercial and ... and Forensic Laboratories)- Global Industry Analysis, Size, Share, ... global life science reagents market was valued at ...
(Date:8/18/2014)... , Aug. 18, 2014 TNI BioTech, ... company pioneering the manufacturing and marketing of innovative therapies ... the Company is providing a second notice of TNI ... In making the announcement, Noreen Griffin , founder ... in advance for your participation in the Annual Meeting. ...
(Date:8/18/2014)... 18, 2014 China is increasingly ... the clinical research industry. Clinicaltrial.gov statistics highlight the ... its aging population; a high increase in infectious ... densely populated pool of patients and a track ... positive points, China also presents challenges for the ...
(Date:8/16/2014)... NY (PRWEB) August 16, 2014 ... industry provide guidance and advisory services to ... and technical issues. Industry services are highly diverse ... Therefore, industry services range from geological and geophysical ... plans. “Consequently, over the past five years, the ...
Breaking Biology Technology:Global Life Science Reagents Market Expected to Reach USD 25.7 Billion in 2019: Transparency Market Research 2Global Life Science Reagents Market Expected to Reach USD 25.7 Billion in 2019: Transparency Market Research 3Global Life Science Reagents Market Expected to Reach USD 25.7 Billion in 2019: Transparency Market Research 4Global Life Science Reagents Market Expected to Reach USD 25.7 Billion in 2019: Transparency Market Research 5TNI BioTech Inc., provides 2nd Notice of Annual Meeting September 4, 2014 2TNI BioTech Inc., provides 2nd Notice of Annual Meeting September 4, 2014 3TNI BioTech Inc., provides 2nd Notice of Annual Meeting September 4, 2014 4China – Land of Opportunities & Challenges for the Clinical Research Industry, New Webinar Hosted by Xtalks 2Scientific and Economic Consulting in Canada Industry Market Research Report Now Available from IBISWorld 2Scientific and Economic Consulting in Canada Industry Market Research Report Now Available from IBISWorld 3
... , Key words: ... • LEADseeker • DeepBlueC• cell-based assays , ... pressure is forcing organizations to continually increase screening throughput. Yet accuracy ... luminescence cell-based assays. LEADseeker™ Multimodality Imaging System was developed to meet ...
... , The cell ... On the one hand this fundamental process provides the opportunity to ... hand drugs and targets in other therapeutic areas must be tested ... Fluorescence Kit is a precise, fast, and simple fluorescence assay to ...
... , , J. Samskog, H. ... GE Healthcare, Uppsala, Sweden , ... method was developed to analyse phosphopeptides in mouse brain tissue. The ... by reversed-phase chromatography (RPC) using Ettan MDLC. The detection was performed ...
Cached Biology Technology:Use of BRET2 luminescence cell-based assays with LEADseeker Multimodality Imaging System 2Use of BRET2 luminescence cell-based assays with LEADseeker Multimodality Imaging System 3Identification of cells in S phase using the Cell Proliferation Fluorescence Kit and IN Cell Analyzer 1000 2Identification of cells in S phase using the Cell Proliferation Fluorescence Kit and IN Cell Analyzer 1000 3Identification of cells in S phase using the Cell Proliferation Fluorescence Kit and IN Cell Analyzer 1000 4Identification of cells in S phase using the Cell Proliferation Fluorescence Kit and IN Cell Analyzer 1000 5Sensitive identification of phosphopeptides in brain tissue using Ettan MDLC and Finnigan LTQ 2Sensitive identification of phosphopeptides in brain tissue using Ettan MDLC and Finnigan LTQ 3Sensitive identification of phosphopeptides in brain tissue using Ettan MDLC and Finnigan LTQ 4
Immunochemistry 1 & 2...
... A.P. Johnstone and M.W. Turner ... strategies and methods used in the ... of antibodies in immunoassays, the standardisation ... ELISA techniques including amplification systems, enzyme ...
Supplemental reagent for annexin V assay....
See product name for description....
Biology Products: