Navigation Links
Penn biologists show that generosity leads to evolutionary success
Date:9/2/2013

over the long term. "Forgiveness" is also a feature of these strategies. A player who encounters a defector may punish the defector a bit but after a time may cooperate with the defector again.

Stewart noticed the first of these generous approaches among the zero determinant strategies that Press and Dyson had defined. After simulating how some generous strategies would fare in an evolving population, he and Plotkin crafted a mathematical proof showing that, not only can generous strategies succeed in the evolutionary version of the Prisoner's Dilemma, in fact these are the only approaches that resist defectors over the long term.

"Our paper shows that no selfish strategies will succeed in evolution," Plotkin said. "The only strategies that are evolutionarily robust are generous ones."

The discovery, while abstract, helps explain the presence of generosity in nature, an inclination that can sometimes seem counter to the Darwinian notion of survival of the fittest.

"When people act generously they feel it is almost instinctual, and indeed a large literature in evolutionary psychology shows that people derive happiness from being generous," Plotkin said. "It's not just in humans. Of course social insects behave this way, but even bacteria and viruses share gene products and behave in ways that can't be described as anything but generous."

"We find that in evolution, a population that encourages cooperation does well," Stewart said. "To maintain cooperation over the long term, it is best to be generous."


'/>"/>

Contact: Katherine Unger Baillie
kbaillie@upenn.edu
215-898-9194
University of Pennsylvania
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. OU microbiologists elected as fellows in the American Academy of Microbiology
2. Cell biologists say immigration reform critical to scientific education and competitiveness
3. Saint Louis University, University of Toronto biologists help decode turtle genome
4. Cancer biologists find DNA-damaging toxins in common plant-based foods
5. Cryptic clams: U-M biologists find species hiding in plain view
6. Some biologists shun new media
7. Biologists produce rainbow-colored algae
8. Biologists explore link between amphibian behavior and deadly disease
9. Biologists lead international team to track Arctic response to climate change
10. Biologists map rare case of fitness-reducing interaction in nuclear, mitochondrial DNA
11. Campus as laboratory: U-M student biologists use Diag trees to help solve gypsy moth mystery
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/11/2014)... hippocampus, the marginal division of the striatum is ... the impact degree of substance P in the ... Yan Yu and his team, College of Biophotonics, ... staining, that substance P receptor, neurokinin 1 was ... division of normal rats. Unilateral or bilateral injection ...
(Date:7/11/2014)... Using spider toxins to study the proteins that let ... say they have stumbled upon a biological tactic that ... insect plagues in a safe and environmentally responsible way. ... be lethal for one species and harmless for a ... target specific pests without harming beneficial species like bees. ...
(Date:7/10/2014)...  Pomerantz LLP has filed a class action ... "Company")(NYSE-MKT: PVCT) and certain of its officers.  The ... Middle District of Tennessee , ... consisting of all persons or entities who purchased ... 2013 and May 22, 2014, both dates inclusive ...
Breaking Biology News(10 mins):Potent spider toxin 'electrocutes' German, not American, cockroaches 2Potent spider toxin 'electrocutes' German, not American, cockroaches 3SHAREHOLDER ALERT: Pomerantz Law Firm Announces the Filing of a Class Action against Provectus Biopharmaceuticals, Inc. and Certain Officers - PVCT 2SHAREHOLDER ALERT: Pomerantz Law Firm Announces the Filing of a Class Action against Provectus Biopharmaceuticals, Inc. and Certain Officers - PVCT 3
... NEW YORK (Nov. 9, 2010) -- Weill Cornell ... $100,000 grants from the Bill & Melinda Gates Foundation ... Explorations, an initiative to encourage bold and unconventional ideas ... to promising and innovative global health research projects conducted ...
... Colo. (Nov. 9, 2010) As dog bites become an increasingly ... are most at risk for bites, that the culprits are usually ... with the second attack often more brutal than the first. ... Durairaj, MD, of the University of Colorado School of Medicine, who ...
... release is available in Spanish . , U.S. ... ways to improve soil on degraded land so it can ... with USDA,s Agricultural Research Service (ARS) at the agency,s Appalachian ... constructed or replacement subsoils and topsoils to build better and ...
Cached Biology News:Gates Foundation continues funding of tuberculosis research at Weill Cornell 2Gates Foundation continues funding of tuberculosis research at Weill Cornell 3Study shows young, unsupervised children most at risk for dog bites 2Improving soil for better lawns and gardens 2
(Date:7/10/2014)... Deep Knowledge Ventures last week sponsored ... Longevity Research’ and welcomed a host of London-based ... Innovation Center for the event, organised by the ... The meeting highlighted the need for both philanthropic ... disease, as well as the crucial role of ...
(Date:7/10/2014)... OMICS Group’s 5th International conference and exhibition ... at Double Tree by Hilton Beijing, China is all ... & Bioanalytical research methods only to facilitate improved living ... Dr. Srinubabu Gedela, MD of OMICS Group Inc has ... one in bringing a unique and international mix of ...
(Date:7/10/2014)...  Kainos Capital, a firm specializing in acquiring and ... has acquired the Slim-Fast brand from Unilever. Unilever will ... the transaction were not disclosed. Slim-Fast is ... markets ready-to-drink shakes, powders, bars and snacks to retail ... in the United Kingdom and ...
(Date:7/10/2014)... may help in the fight against terrorism with the ... of explosives with the use of light and special ... and Actuators B: Chemical , the researchers describe a ... concentrations as low as 6.3 ppm (parts per million). ... minutes. , "Traditionally explosives detection has involved looking for ...
Breaking Biology Technology:DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 2DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 3DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 4DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 5DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 6A Critical Review of Analytical Techniques for Improved Living Standards 2A Critical Review of Analytical Techniques for Improved Living Standards 3A Critical Review of Analytical Techniques for Improved Living Standards 4Kainos Capital Acquires Slim-Fast From Unilever 2Detecting trace amounts of explosives with light 2
... DUBLIN, September 30, 2010 ... ... var ... by longUrl, so we need to grab the first one. for (var r in data.results) { first_result ...
... With MSD for Long-Term Commercial Supply of Microplasmin -- LEUVEN, Belgium, September 30, 2010 ... ... --> ... var s = ,; var first_result; // Results are keyed by longUrl, so we need to grab ...
... Spring Harbor, NY -- The story of the double helix,s ... source -- a never-before-read stack of letters to and from ... 1950-76 -- has been uncovered by two professors at the ... (CSHL). The letters both confirm and extend ...
Cached Biology Technology:Shire Announces Results of the Tender Offer for Movetis NV and Commencement of Squeeze-Out Tender Period 2Shire Announces Results of the Tender Offer for Movetis NV and Commencement of Squeeze-Out Tender Period 3Shire Announces Results of the Tender Offer for Movetis NV and Commencement of Squeeze-Out Tender Period 4Shire Announces Results of the Tender Offer for Movetis NV and Commencement of Squeeze-Out Tender Period 5Shire Announces Results of the Tender Offer for Movetis NV and Commencement of Squeeze-Out Tender Period 6Shire Announces Results of the Tender Offer for Movetis NV and Commencement of Squeeze-Out Tender Period 7Shire Announces Results of the Tender Offer for Movetis NV and Commencement of Squeeze-Out Tender Period 8ThromboGenics Signs Deal With MSD for Long-Term Commercial Supply of Microplasmin 2ThromboGenics Signs Deal With MSD for Long-Term Commercial Supply of Microplasmin 3ThromboGenics Signs Deal With MSD for Long-Term Commercial Supply of Microplasmin 4ThromboGenics Signs Deal With MSD for Long-Term Commercial Supply of Microplasmin 5ThromboGenics Signs Deal With MSD for Long-Term Commercial Supply of Microplasmin 6ThromboGenics Signs Deal With MSD for Long-Term Commercial Supply of Microplasmin 7ThromboGenics Signs Deal With MSD for Long-Term Commercial Supply of Microplasmin 8New twists in double helix discovery story are uncovered 2New twists in double helix discovery story are uncovered 3
... the premium quality siRNAs you need for ... be readily ordered online by providing either ... providing the sense and antisense siRNA sequences. ... Validated and Silencer Pre-designed siRNAs, ...
Mouse monoclonal [6C3] to JAB1 ( Abpromise for all tested applications). entrezGeneID: 10987 SwissProtID: O15386...
Human FGF R2 (alpha isoforms) MAb (Clone 98706)...
... HT, 1 kit. Facilitates the simple, phenol-free ... and hard tissue requiring proteinase K digestion.Each ... DNA from 50 preparations of up to ... Synthesis & Purification, Purification and Amplification of ...
Biology Products: