Navigation Links
Switching goals
Date:8/27/2007

Is heading straight for a goal the quickest way there" If the name of the game is evolution, suggests new research at the Weizmann Institute of Science, the pace might speed up if the goals themselves change continuously.

Nadav Kashtan, Elad Noor and Prof. Uri Alon of the Institutes Molecular Cell Biology and Physics of Complex Systems Departments create computer simulations that mimic natural evolution, allowing them to investigate processes that, in nature, take place over millions of years. In these simulations, a population of digital genomes evolves over time towards a given goal: to maximize fitness under certain conditions. Like living organisms, genomes that are better adapted to their environment may survive to the next generation or reproduce more prolifically. But such computer simulations, though sophisticated, dont yet have all the answers. Achieving even simple goals may take thousands of generations, raising the question of whether the three-or-so billion years since life first appeared on the planet is long enough to evolve the diversity and complexity that exist today,

Evolution takes place under changing environmental conditions, forcing organisms to continually readapt. Intuitively, this would slow things down even further, as successive generations must switch tack again and again in the struggle to survive. But when Kashtan, Noor and Alon created a simulation in which the goals changed repeatedly, they found that its evolution actually speeded up. They even found that the more complex the goal i.e., the more generations needed reach it under fixed conditions the faster evolution accelerated in response to changes in that goal.

Computerized evolution ran fastest, the scientists found, when the changes followed a pattern they believe may be pervasive in nature. In previous research, Kashtan and Alon had shown that evolution may often be modular involving adjustments to standard parts, rather than wholesale rem
'/>"/>

Contact: Yivsam Azgad
news@weizmann.ac.il
972-893-43856
Weizmann Institute of Science
Source:Eurekalert

Page: 1 2

Related biology news :

1. Switching to new anti-bacterial targets: Riboswitches
2. Switching genes to overdrive improves muscular dystrophy symptoms in mice
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/16/2014)... The 36 Pit Fire began on September 13, 2014. ... It is currently over 2,300 acres in size and ... The 36 Pit Fire was calm Monday night due to ... establishing an anchor point and beginning to construct a fireline ... The following resources are working on the fire: , 7 ...
(Date:9/16/2014)... same viruses that make us sick can take up ... a sneeze, cough or other troublesome symptom, according to ... St. Louis. , On average, healthy individuals carry ... researchers report online in BioMed Central Biology . ... the diversity of viruses in healthy people. , ...
(Date:9/16/2014)... for the dinosaurs 66 million years ago decimated the ... extent than their deciduous peers, according to a study ... the journal PLOS Biology . , Applying ... fossilized leaves of angiosperms flowering plants excluding ... ecology of a diverse plant community thriving during a ...
Breaking Biology News(10 mins):Healthy humans make nice homes for viruses 2Healthy humans make nice homes for viruses 3Meteorite that doomed dinosaurs remade forests 2Meteorite that doomed dinosaurs remade forests 3Meteorite that doomed dinosaurs remade forests 4
... percent as compared to last year,s record size. According to measurements ... 27.7 million tonnes, compared to the 2006 record ozone loss of ... area and the depth of the ozone hole. The area of ... 220 Dobson Units is 24.7 million sq km, roughly the ...
... vaccine delivered through painless microneedles in patches applied ... to delivery through hypodermic needles, according to researchers ... Technology. Using new grants from the National Institutes ... five years, researchers from the two institutions plan ...
... help may be on the way for beleaguered growers ... Many varieties of the widely grown bottlegourd (Lagenaria siceraria) ... (ZYMV), a scourge of commercial cucurbits that includes pumpkins, ... ZYMV infects cucurbits throughout North America and in other ...
Cached Biology News:2007 ozone hole 'smaller than usual' 22007 ozone hole 'smaller than usual' 3Flu vaccine in painless skin patches under development at Emory, Georgia Tech with NIH grants 2Battling virus disease of watermelon with bottlegourds 2
(Date:9/17/2014)... September 17, 2014 ... action from a truly novel class of ... MGB Biopharma, a biopharmaceutical company developing a ... that it has secured £4.0m ($6.4m) to ... MGB-BP-3, against a range of Gram-positive infections ...
(Date:9/17/2014)... The Alliance for Clinical Research ... collaborative building a global system to enhance safety, ... Phase 3 of its Site Accreditation and Standards ... Kalali, Vice-President, Global Head, Neuroscience Center of Excellence ... Quality Integration (CQI) Consulting will lead the effort ...
(Date:9/16/2014)... chin strap that can harvest energy from jaw movements ... Canada. , It is hoped that the device can ... a number of small-scale implantable or wearable electronic devices, ... and communication devices. , The first results of the ... IOP Publishing,s journal Smart Materials and Structures . ...
(Date:9/16/2014)... cars and flashlights, batteries play an important role ... are seeking ways to improve battery life and ... water-based solution, researchers at the University of Missouri ... battery that could be used for many applications ... and also in complicated applications such as space ...
Breaking Biology Technology:MGB Biopharma Secures £4.0m ($6.4m) to Advance its Novel Lead Antibacterial, MGB-BP-3, into Clinical Development 2MGB Biopharma Secures £4.0m ($6.4m) to Advance its Novel Lead Antibacterial, MGB-BP-3, into Clinical Development 3MGB Biopharma Secures £4.0m ($6.4m) to Advance its Novel Lead Antibacterial, MGB-BP-3, into Clinical Development 4MGB Biopharma Secures £4.0m ($6.4m) to Advance its Novel Lead Antibacterial, MGB-BP-3, into Clinical Development 5MGB Biopharma Secures £4.0m ($6.4m) to Advance its Novel Lead Antibacterial, MGB-BP-3, into Clinical Development 6MGB Biopharma Secures £4.0m ($6.4m) to Advance its Novel Lead Antibacterial, MGB-BP-3, into Clinical Development 7Global Standards Initiative for Clinical Research Sites Advances 2Global Standards Initiative for Clinical Research Sites Advances 3Global Standards Initiative for Clinical Research Sites Advances 4'Smart material' chin strap harvests energy from chewing 2
... 25 Scimitar Equity, LLC issues a ... VOQP), entitled,"Creating Value; Turnaround Leverages Product Opportunities ... review is available at website: http://www.scimitarequity.com ... Jersey-based biotechnology company,dedicated to becoming a recognized ...
... 25 Mymetics,Corporation (OTC: MYMX), will be holding an ... PM New York Time to update all shareholders,on the ... Form 10-Q and to,address recent press articles., You ... at +1-866-591-4361 PIN 815,726 and from Europe at +41-800-329-326 ...
... 23 Eisai Corporation of,North America and its ... Food and Drug Administration (FDA) has approved a ... prevention of,chemotherapy-induced nausea and vomiting (CINV). ALOXI Capsules ... prevention of acute nausea and,vomiting following initial and ...
Cached Biology Technology:VioQuest Pharmaceuticals, Inc Q2/08 Review Issued by Scimitar Equity, LLC 2FDA Approves ALOXI(R) (Palonosetron HCl) Capsules for Prevention of Acute Chemotherapy-induced Nausea and Vomiting 2FDA Approves ALOXI(R) (Palonosetron HCl) Capsules for Prevention of Acute Chemotherapy-induced Nausea and Vomiting 3
HOXC11 Antibody...
HOXC11 Antibody...
PPOX Immunogen: PPOX (AAH02357, 378 a.a. ~ 478 a.a) partial recombinant protein with GST tag. Storage: -20 C, Avoid Freeze/Thaw Cycles *Available for distribution in the US only...
Rabbit anti MMP-13, Hinge Region MMP-13 Hinge Region...
Biology Products: