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:7/27/2015)... , July 27, 2015   Zynx Health ... experience-based clinical improvement solutions, today announced that its ... now available on Android smartphones and tablets. With ... post-care organizations can use ZynxCarebook to securely exchange ... condition, streamline care transitions to other care settings, ...
(Date:7/21/2015)... , July 21, 2015 Passwords have ... seen in the recent U.S. Office of Personnel ... to the infosec conundrum, but developers and end-users ... To address this dilemma, Biometrics-as-a-Service provider HYPR Corp. ... Tokenization SDK for third party integration. ...
(Date:7/9/2015)... 2015 Research and ... the "Biometrics for Banking; Market & Technology ... to their offering. The adoption for ... growth and the forecast is that by 2020 ... companies involved in delivering biometric systems to the ...
Breaking Biology News(10 mins):Zynx Health Adds Android Device Support to ZynxCarebook Solution 2Zynx Health Adds Android Device Support to ZynxCarebook Solution 3HYPR Corp. Launches Industry First Biometric Tokenization Platform 2HYPR Corp. Launches Industry First Biometric Tokenization Platform 3HYPR Corp. Launches Industry First Biometric Tokenization Platform 4Global Banking Biometrics Market 2015-2020 - Market & Technology Analysis, Adoption Strategies and Forecasts 2Global Banking Biometrics Market 2015-2020 - Market & Technology Analysis, Adoption Strategies and Forecasts 3
... evangelical movement is defined has profound implications for where ... study by sociologists at Rice University and the University ... much debate over whether Sen. Obama can shave off ... Rice,s D. Michael Lindsay, one of the researchers. "That ...
... , Plants that grow more slowly stay ... Biology, scientists at the Max Planck Institute for Developmental ... of genes, so-called microRNAs, coordinate growth and aging processes ... TCP transcription factors. These transcription factors in turn influence ...
... for Applied Physics will be awarded to Phaedon Avouris ... electrical and optical properties of nanoscale carbon materials including ... The award, accompanied by US$ 5,000, will be presented ... at Harvard University in Cambridge, MA, on 27 September ...
Cached Biology News:New study looks to define evangelicals and how they affect polling 2Formula discovered for longer plant life 2Carbon nanostructures form the future of electronics and optoelectronics 2
(Date:8/3/2015)... , August 3, 2015 ... Portland Hospital waved the shortfall of ... could stand normally for the first time. ... (Photo: http://photos.prnewswire.com/prnh/20150803/254229 ) The Selective ... legs allowing him to carry out his wish to ...
(Date:8/3/2015)... LOUIS (PRWEB) , ... August 03, 2015 , ... Nine ... in Iowa, Illinois and Indiana. Hosted by the Soil Health Partnership , the ... create lasting environmental benefits while potentially increasing farm productivity and income. , Brent Bible ...
(Date:8/3/2015)... 2015 According to a new ... Culture: Asia to Witness Highest ... global 3D cell culture market was valued at US$ 586.1 Mn ... CAGR of 29.1% to account for US$ 2,717.6 Mn ... http://www.persistencemarketresearch.com/market-research/3d-cell-cultures-market.asp 3D cell culture refers to ...
(Date:7/31/2015)... ... July 31, 2015 , ... Global Resorcinol ... premium industry insights on the global resorcinol industry. The report highlights the various ... vivid market scenarios and analysis of primary and secondary inputs from the existing ...
Breaking Biology Technology:Cerebral Palsy Operation by The Portland Hospital Allows a Boy to Stand Properly for the First Time 2Cerebral Palsy Operation by The Portland Hospital Allows a Boy to Stand Properly for the First Time 3Soil Health Field Days Kick Off Throughout Midwest 2Soil Health Field Days Kick Off Throughout Midwest 3Global 3D Cell Culture Market Will Reach US$ 2,717.6 Million by 2020: Persistence Market Research 2Global 3D Cell Culture Market Will Reach US$ 2,717.6 Million by 2020: Persistence Market Research 3Global 3D Cell Culture Market Will Reach US$ 2,717.6 Million by 2020: Persistence Market Research 4Resorcinol Market to Grow at 6% CAGR to 2019 Says New Research Report at ReportsnReports.com 2Resorcinol Market to Grow at 6% CAGR to 2019 Says New Research Report at ReportsnReports.com 3Resorcinol Market to Grow at 6% CAGR to 2019 Says New Research Report at ReportsnReports.com 4
... announced that data from Phase 2 studies for its ... (SB939) demonstrate promising activity in patients with myelofibrosis (MF). ... Meeting and Exposition in San Diego, Calif. ... activity in alleviating MF-associated splenomegaly and constitutional symptoms with ...
... field of vision is a step closer to reality with ... provide the wearer with hands-free information updates. In ... Journal of Micromechanics and Microengineering , researchers constructed a computerised ... live eyes. There were no signs of adverse side effects. ...
... Office of Scientific Research (AFOSR) was chosen by Time Magazine for ... Ali Aliev, Yuri Gartstein and Ray Baughman, of the University of ... referred to as the "mirage effect from thermally modulated transparent carbon ... it: an ,invisibility cloak,." The key ...
Cached Biology Technology:S*BIO's Novel JAK2 Inhibitor Pacritinib (SB1518) and Histone Deacetylase Inhibitor Pracinostat (SB939) Demonstrate Promising Activity in Phase 2 Studies for Patients with Myelofibrosis (MF) 2S*BIO's Novel JAK2 Inhibitor Pacritinib (SB1518) and Histone Deacetylase Inhibitor Pracinostat (SB939) Demonstrate Promising Activity in Phase 2 Studies for Patients with Myelofibrosis (MF) 3Terminator-style info-vision takes step towards reality 2
... length insert sequencing service for large insert ... Agencourt utilizes unique library construction techniques ... are several features that allow Agencourt to ... turnaround including our patented magnetic bead-based SPRI ...
... maintenance, calibration, and validation (MCV) ... plate used for hands-free startup, ... using the Bio-Plex suspension array ... for use with Bio-Plex Manager ...
A flexible 24-48 hour DNA sequencing service. Samples may be shipped in standard 1.5mL tubes. Oligo synthesis and DNA preparation available. Read lengths up to 850 Phred 20 bases. Universal primers p...
... Agencourts cDNA sequencing and finishing services ... Agencourt can perform large-scale 5' screening ... finishing. Our considerable experience with large-scale ... make Agencourt an ideal cDNA outsourcing ...
Biology Products: