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:10/17/2014)... regarding Ebola is critical and pertinent for practicing physicians ... outbreak and epidemic. The Journal, Disaster Medicine and ... Ebola Virus and Public Health, to surround the public, ... critical societal moment. , On October 17, the ... . The primer was prepared by Dr. Eric Toner, ...
(Date:10/16/2014)... wages war on the human body. Battles are ... In pancreatic cancer, this stalemate—known as tumor dormancy—can ... malignant, a phenomena that is poorly understood. ... laboratory of Salvatore Torquato, a Professor of Chemistry ... surrounding tumor dormancy and the switch to a ...
(Date:10/16/2014)... cultivated efficiently, they are anything but sustainable: environmental ... cultivation is becoming increasingly evident. Despite their disadvantages, ... are regarded as the sole possibility of achieving ... finds Bernhard Schmid, an ecology professor at the ... of agriculture and forestry. After all, a new ...
Breaking Biology News(10 mins):Modeling tumor dormancy 2Plant communities produce greater yield than monocultures 2Plant communities produce greater yield than monocultures 3
... is measured to understand tree health, fluxes in carbon ... of the most essential and widely collected woody plant ... is awkward and time consuming. Scientists have developed a ... safely and accurately. Dendrometer bands are metal straps ...
... (IL-7) is an important immune messenger protein which ensures ... in our body for immune defence. Researchers from ETH ... function: it enhances the drainage function of lymphatic vessels, ... vessels into the body tissue and return it to ...
... an old dog new tricks." Now neuroscientists are beginning to ... neuroscientists have struggled to understand how the microcircuitry of the ... for the old. New findings published in the journal ... Los Angeles and the University of California, Irvine show how ...
Cached Biology News:New technique for measuring tree growth cuts down on research time 2New technique for measuring tree growth cuts down on research time 3New function for a well-known immune messenger molecule 2New function for a well-known immune messenger molecule 3Researchers discover how inhibitory neurons behave during critical periods of learning 2
(Date:10/22/2014)... The Americas Inorganic Refrigerants Market report ... Americas with analysis and forecast of revenue. , ... Refrigerants Market report, to get an idea of ... glimpse of the segmentation in the Americas inorganic ... and figures. , http://www.micromarketmonitor.com/market/americas-inorganic-refrigerants-4191654241.html , ...
(Date:10/22/2014)... October 22, 2014 Currently offering ... A & D Weighing, Rice Lake, and Ohaus, ... Balance . The Sartorius CPA Semi-Micro Balance is ... high-quality, precise, and user-friendly laboratory balance. , Sartorius ... equipment, their laboratory balances are well known for ...
(Date:10/22/2014)... VANCOUVER , Oct. 22, 2014 /PRNewswire/ - iCo ... ICOTF), today announced next steps for its Oral ... findings from its in vitro work ... therapy.  iCo now plans to complete pre clinical ... an initial Phase 1A clinical trial, utilizing approximately ...
(Date:10/20/2014)... 2014 Mapp Biopharmaceutical,s valiant effort to ... to fight the Ebola outbreak will make the ... production of pharmaceuticals can be, according to Kalorama ... while some may be taken aback by the ... industry knowledge are well aware of the complex ...
Breaking Biology Technology:The Americas Inorganic Refrigerants Market is estimated to grow to $71.6 million by 2018 - New Report by MicroMarket Monitor 2The Americas Inorganic Refrigerants Market is estimated to grow to $71.6 million by 2018 - New Report by MicroMarket Monitor 3Pipette.com Launches the Addition of Sartorius CPA Semi-Micro Balance to Their Product Portfolio with Special Promotional Pricing 2Pipette.com Launches the Addition of Sartorius CPA Semi-Micro Balance to Their Product Portfolio with Special Promotional Pricing 3iCo Therapeutics Announces Advancement of Oral Amphotericin B Program 2iCo Therapeutics Announces Advancement of Oral Amphotericin B Program 3Kalorama: ZMapp Highlights Need For Faster Biopharmaceutical Production 2Kalorama: ZMapp Highlights Need For Faster Biopharmaceutical Production 3
... of Madison has been licensed to sell a ... agents, GenTel announced on Tuesday. , ,GenTel will market ... Kreatech Biotechnology BV of Amsterdam, under its ... are validated for use on GenTel's PATH protein microarray ...
... drive thru Illinois you now pay a premium for using cash ... device for your car. If you stop for gas at a ... plastic device on their key chain to pay for gas. These ... applications to reduce costs, improve efficiency, and potentially improve the buyers ...
... Wis. - Former Wisconsin Gov. and Secretary of ... board of directors at C.R. Bard , the ... at the company's August board meeting. , ,Bard, a ... sells specialty devices for vascular, urology, oncology and surgical ...
Cached Biology Technology:
... HISTAR detection systems provide linking and ... with species specific primary antibodies for ... Visualisation is accomplished using an ultra-sensitive ... polymer labelling technology. Secondary antibodies are ...
... Enzyme concentration - 5 units/µL ,• High ... yields ,• Leaves an 'A' overhang ,• ... which exhibits very high activity in primer ... ensure the quality of the enzyme, each ...
... from Thermus aquaticus expressed in E. coli; ... of 250 units enzyme/tube and Buffer I ... the same enzyme as AmpliTaq DNA Polymerase ... separation process to ensure that contaminating bacterial ...
Our original highly-purified, robust Taq Polymerase which delivers consistently high yields and minimal background...
Biology Products: