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:11/3/2014)... Cancer Center study published in this month,s ... describes the activity of a recently discovered communication molecule ... It has been known to limit inflammation and the ... system: IL-37 inhibits the ability of the immune system ... mechanism that underlies IL-37,s effect on the immune system ...
(Date:11/3/2014)... weight and preterm birth are linked to increased risk ... in the American College of Rheumatology (ACR) journal, ... weight and pre-term babies were not at greater risk ... , According to the ACR, 27 million Americans over ... Symptoms of OA range from mild to severe and ...
(Date:11/2/2014)... of a bold quest to rid the world entirely ... announced an award of US$156 million to PATH to ... new vaccines that will interrupt the cycle of malaria ... agenda. Such vaccines would ensure that parasite reintroduction is ... bed net." , This approach to developing malaria ...
Breaking Biology News(10 mins):PNAS: From HIV to cancer, IL-37 regulates immune system 2Preterm, low birth-weight babies may need new hips in adulthood 2New malaria vaccines to prevent infection and block transmission get a shot in the arm 2New malaria vaccines to prevent infection and block transmission get a shot in the arm 3New malaria vaccines to prevent infection and block transmission get a shot in the arm 4
... therapy (ECT) is the most effective acute treatment for ... ECT, there remains a significant risk of adverse cognitive ... that the regions that need to be stimulated to ... from the regions that result in memory problems (the ...
... study led by researchers from Harvard School of Public ... the UK has, for the first time, used genome ... population following the introduction of a vaccine. The study ... the introduction of the ,Prevnar, conjugate polysaccharide vaccine, which ...
... University of Manchester scientists, writing in the journal Nature ... can both have an unexpected cooling effect on the world,s ... water droplets, condensed on to tiny particles suspended in the ... into cloud droplets. It has been known for some decades ...
Cached Biology News:Researchers reveal new more precise method of performing electroconvulsive therapy 2Genome sequencing provides unprecedented insight into causes of pneumococcal disease 2Organic vapors affect clouds leading to previously unidentified climate cooling 2
(Date:11/26/2014)... PHILADELPHIA , Nov. 26, 2014 /PRNewswire-USNewswire/ ... unforgiving environments. Human exploration of space requires astronauts to ... mission safety and success, and prevent potential errors and ... success, little is known about how cognition is affected ... primarily affected. Now, Penn Medicine researchers are ...
(Date:11/26/2014)... On January, 14, 2015, UMBC’s Biotechnology ... science community to the UMBC campus for a discussion ... Protein Society, will take place from 9 a.m. to ... Through discussion, presentations and workshops, the free symposium will ... role in the industry and the future of protein ...
(Date:11/26/2014)... PMG Research, Inc. announced today the formation ... of sites that provide clinical research services to pharmaceutical companies ... through its partnerships with large physician practices and integrated health ... in the Southeastern United States and spans over 60 physician ... will be held by: Dr. Robert Holmes, MD, of ...
(Date:11/26/2014)... NC (PRWEB) November 25, 2014 ... Intensity Focused Ultrasound (HIFU) devices, recently participated in ... Small Renal Mass 360° .” Key opinion leaders ... therapeutic advances related to small renal masses while ... about different ablative technologies in hands-on labs. Attendees ...
Breaking Biology Technology:Penn Medicine Team Develops Cognitive Test Battery to Assess the Impact of Long Duration Spaceflights on Astronauts' Brain Function 2Penn Medicine Team Develops Cognitive Test Battery to Assess the Impact of Long Duration Spaceflights on Astronauts' Brain Function 3Penn Medicine Team Develops Cognitive Test Battery to Assess the Impact of Long Duration Spaceflights on Astronauts' Brain Function 4PMG Research Names Medical Advisory Board 2PMG Research Names Medical Advisory Board 3SonaCare Medical Supports American Urology Association’s Small Renal Mass 360° Summit 2SonaCare Medical Supports American Urology Association’s Small Renal Mass 360° Summit 3
... 15, 2011 This evening, Novo Nordisk awarded sponsorships ... support programs that educate people living with type 2 ... reduce the risk of long-term diabetes related complications. The ... program – a new initiative that aims to promote ...
... 15, 2011 Roka Bioscience announced today that the ... certification of the Listeria Detection Assay. This evaluation is ... (AOAC-RI) certification of methods used in the food safety ... laboratory and monitored by AOAC. The internal portion of ...
... /PRNewswire-Asia/ -- ShangPharma Corporation (NYSE: SHP ... pharmaceutical and biotechnology research and development outsourcing company, ... leading Chinese pharmaceutical company, today announced that Shanghai ... and Hengrui have entered into a strategic partnership ...
Cached Biology Technology:Novo Nordisk and Atlanta Area Organizations Partner on Diabetes Education Programs 2Novo Nordisk and Atlanta Area Organizations Partner on Diabetes Education Programs 3Roka Bioscience Initiates External Trial for AOAC Certification 2ShangPharma Subsidiary and Jiangsu Hengrui Medicine Partner in Therapeutic Antibody Research and Development 2ShangPharma Subsidiary and Jiangsu Hengrui Medicine Partner in Therapeutic Antibody Research and Development 3
Immunogen: Extract of pigmented melanoma metastases from lymph nodes. Storage: -20 C, Avoid Freeze/Thaw Cycles...
with GlutaMAXIL-glutamine...
alpha N-catenin (C-19)...
This STAT antibody sampler pack contains 8 monoclonal ,STAT antibodies....
Biology Products: