Navigation Links
Cheating -- and getting away with it
Date:1/11/2013

a gene) confer an advantage in the first place? And if cheating benefits the cheater and has no hidden cost, what holds cheating in check?

Cheating is surprisingly easy

D. discoideum spend most of their lives as predatory single cells hunting bacteria through the leaf litter and upper soil layers of forests in eastern North America. But when they can't find bacteria and begin to starve, they gather to form fruiting bodies, a thin stalk of cells with a ball of spores at the top, like a miniature Space Needle. The amoebae that end up in the stalk die, giving up their lives to benefit the amoebae that become spores.

Importantly the cells that stream together to form the fruiting body can be clonal (genetically identical) or have two (or more) genetic makeups. If each clone in a two-clone fruiting body contributes half the cells to the spore body, both clones gain from cooperating because each must sacrifice fewer cells to the stalk.

But game theory suggests the clones should sometimes evolve strategies that allow them to gain the benefits of cooperation without paying the costs.

In 2008 Queller and Strassmann published a genome-wide screen of D. discoideum that found roughly 180 cooperation genes, genes that might produce cheaters if they mutated. The number of genes, and the number of different biological pathways they affected, suggested it might be easy to evolve cheating and difficult to control it fully.

At the time cheaters were believed to be held in check by mechanisms that made non-cooperation costly. The first D. discoideum cheater to be scrutinized, CheaterA, described in 2000, is not able to form fruiting bodies on its own. This is a crippling disability that would prevent it from surviving in the wild.

But the screen from 2008 selected only clones able to produce clonal fruiting bodies, thus passing a basic test of evolutionary fitness. These clones were what is called
'/>"/>

Contact: Diana Lutz
dlutz@wustl.edu
314-935-5272
Washington University in St. Louis
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Overweight pregnant women not getting proper weight-gain advice
2. Texas cotton getting a genetic tune-up
3. Getting (drugs) under your skin
4. For young birds, getting stressed out can be a good thing
5. Getting to the root -- unearthing the plant-microbe quid pro quo
6. Carbon is key for getting algae to pump out more oil
7. University of Tennessee anthropologists find American heads are getting larger
8. Scripps Florida scientists identify neurotranmitters that lead to forgetting
9. Light weights are just as good for building muscle, getting stronger, researchers find
10. Why getting healthy can seem worse than getting sick
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Cheating -- and getting away with it
(Date:10/31/2014)... 31, 2014 – Dr. John Schoggins , Assistant ... received a prestigious New Innovator Award from the National ... understand why bats can harbor numerous viruses without becoming ... over five years is one of 85 awards given ... NIH Common Fund. The New Innovator Awards were created ...
(Date:10/31/2014)... have been studying the behavior of approximately 300 ... years. They observed that ravens slowly build alliances ... However, they also observed that these affiliative interactions ... in about 50 % of the cases these ... affiliating ravens, intervening can be potentially risky when ...
(Date:10/30/2014)... is available in German . ... prompt our fellow humans to behave socially? This is ... in game theory. Previous studies assumed that it is ... scientists from the Max Planck Institute for Evolutionary Biology ... an influence on the cooperative behaviour of others. However, ...
Breaking Biology News(10 mins):UT Southwestern Microbiologist awarded prestigious NIH research grant 2Together we are strong -- or insufferable 2Together we are strong -- or insufferable 3Together we are strong -- or insufferable 4
... researchers at the University of Rochester Medical Center have discovered ... to harm the function of T-cells, which regulate the body's ... discovery adds insight to the latest trend in lead research, ... threat to understanding the long-term burden on the body, said ...
... successfully converted human embryonic stem cells into cartilage cells, ... grown for transplantation. , Cartilage is the dense connective ... movement of joints. , Research to be published ... embryonic stem cells to become cartilage cells. This could ...
... amateur fossil finder Van Turner discovered a small vertebra at ... the creature was unlike anything in the fossil record. Scientists ... of an extinct line of lizards with an evolutionary twist: ... the remains to paleontologists at the Dallas Museum of Natural ...
Cached Biology News:The dangerous legacy of lead 2Scientists use stem cells to grow cartilage 2Missing fossil link 'Dallasaurus' found 2Missing fossil link 'Dallasaurus' found 3Missing fossil link 'Dallasaurus' found 4
(Date:10/31/2014)... 31, 2014 Huge event with ... future pharma industry health, analysis and forecasting   ... the closing of its most successful show to date ... 2,500 exhibitors. Held this year in Paris ... key players from 140+ countries representing every step of ...
(Date:10/31/2014)... The evening of October 29th, ... in successful medical device development to give its ... takes to successfully innovate in the complex and ... two-hour on-site class, Insight gave master’s program students ... School of Engineering, medical and law schools an ...
(Date:10/31/2014)... 31, 2014 Following the successful launch ... learning webinar to introduce its new product and demonstrate ... biostatisticians. , Launched in September, Formedix On Demand Services ... clinical trial automation tools. For the first time, these ... And by introducing Formations – a revolutionary new token-based ...
(Date:10/31/2014)... Brady (NYSE:BRC), a global ... a new video testimonial on the effectiveness ... a research technician at the BloodCenter of Wisconsin discusses ... and storing hundreds of thousands of samples, and how ... , “At Brady, we design our label materials with ...
Breaking Biology Technology:CPhI Worldwide 2014 Announces Biggest Ever Show and Points to Pharma Growth in Brazil, Russia and Fast Emerging Africa 2CPhI Worldwide 2014 Announces Biggest Ever Show and Points to Pharma Growth in Brazil, Russia and Fast Emerging Africa 3CPhI Worldwide 2014 Announces Biggest Ever Show and Points to Pharma Growth in Brazil, Russia and Fast Emerging Africa 4CPhI Worldwide 2014 Announces Biggest Ever Show and Points to Pharma Growth in Brazil, Russia and Fast Emerging Africa 5CPhI Worldwide 2014 Announces Biggest Ever Show and Points to Pharma Growth in Brazil, Russia and Fast Emerging Africa 6Insight Product Development Gives Northwestern University Students Foundation for Innovation Success 2Insight Product Development Gives Northwestern University Students Foundation for Innovation Success 3Formedix to Introduce "Revolutionary" Clinical Trial Automation Software with Learning Webinar 2Brady Debuts New Lab Label Testimonial Video 2
... Oct. 7 Castle Access, Inc. announces the ... appointment aligns the Castle Access organization with that ... IT services provider, and gives clients in Southwestern ... of enterprise data center and mission-critical managed services. ...
... is developing and commercializing breakthrough single-molecule genomic analysis ... Officer, Han Cao, Ph.D., was awarded the Chinese ... Economic and Technical Cooperation Forum in Beijing, China ... recognition of Dr. Cao,s entrepreneurial spirit and success ...
... 7 GeneGo, Inc., a leading provider of databases, ... today that they have integrated GenomeQuest,s Sequence Data Management ... Using GenomeQuest,s interactive analysis, scientists who have drilled down ... of millions of reads, to thousands of expressed genes, ...
Cached Biology Technology:Castle Access Names New Managing Director 2Castle Access Names New Managing Director 3BioNanomatrix Founder and CSO Dr. Han Cao Awarded Chinese Rising Star Entrepreneur Award 2GeneGo Announces Integration With GenomeQuest for Pathway Analysis of Next Generation Sequencing Data 2
... C-terminal reactive. Cross-reacts fully with GLP-1(1-36) ... with the unamidated forms GLP-1(7-37) and ... as hGLP-2, glucagon, hGIP and VIP.,SPECIES ... identical in all mammalian species studied ...
Anti Human JAM-1, Monoclonal Antibody, Clone M.Ab.F11...
MOUSE ANTI HUMAN CYTOKERATIN 1-8...
Immunogen: Tissue / cell preparation. (Murine EHS laminin preparation) Storage: -20 C, Avoid Freeze/Thaw Cycles...
Biology Products: