Navigation Links
Evolution can select for evolvability, Penn biologists find
Date:11/14/2013

system were as much as eight times more common than would be expected by chance alone and more common than mutations that affected other parts of the VlsE protein. In addition, the rate of mutation at the unexpressed cassettes was greater than that at other locations in the bacterial genome.

Taken together, the results provide direct evidence that evolvability was the target of natural selection. The researchers note, however, that this doesn't mean that "natural selection for evolvability" is necessarily a common trait across all living things.

"It would be incredibly difficult to demonstrate this for free-living eukaryotic organisms, like humans," Brisson said. "But we can now say that evolvability can be the object of selection in the face of environmental pressure."


'/>"/>

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

Page: 1 2 3

Related biology news :

1. Penn team elucidates evolution of bitter taste sensitivity
2. Fast-mutating DNA sequences shape early development; guided evolution of uniquely human traits
3. Targeting evolution: Could this be the next strategy to stop superbugs?
4. Alfred Russel Wallace: Co-founder of the theory of biological evolution
5. Climate change and coevolution: Weve done the math
6. Grazers and pollinators shape plant evolution
7. Evolutionary medicine of skin cancer risk among Europeans
8. Recent highlights in Molecular Biology and Evolution
9. Fear of holes may stem from evolutionary survival response
10. Penn biologists show that generosity leads to evolutionary success
11. Biometrics Can Revolutionise Mobile Payment Security, says Frost & Sullivan
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/15/2014)... of wild, domesticated, and domesticated-wild hybridized populations ... found that within 5 to 11 generations, ... wild populations that hybridized with domesticated populations. ... provides evidence that natural selection, over time, ... experience as a result of increased genetic ...
(Date:9/15/2014)... Vuoksi River and the subsequent rapid decrease in the ... revealed thousands of square kilometres of new, fertile land ... University of Helsinki researchers has studied the role that ... interaction between nature and humans. After dramatic shifts in ... changes and gave rise to a new, innovative culture. ...
(Date:9/15/2014)... PA, September 15, 2014 Schizophrenia is generally considered ... shares many risk factors, both genetic and environmental, with ... , The normal path for brain development is determined ... genes and a wide range of environmental factors. , ... patient populations are required in order to map the ...
Breaking Biology News(10 mins):The creation of the Vuoksi River preceded a significant cultural shift 2Brain Development in Schizophrenia Strays from the Normal Path 2
... A mutation in blood stem cells occurs in patients ... at the Moores Cancer Center at the University of ... Cell Biology and Regenerative Medicine and Comprehensive Cancer Center ... The discovery suggests that development of a very specific ...
... colleagues have produced 3-D images of ancient fossils -- 650 ... an achievement that has never been done before. , If ... Earth, Schopf said the techniques he has used, called confocal ... look at microscopic fossils inside the rocks to search for ...
... bone may rely on a few secrets from the ... Berkeley National Laboratory (Berkeley Lab) have harnessed the way ... is four times stronger than material currently used in ... variations of this substance could also be used in ...
Cached Biology News:Mutation in blood stem cells provides clues to cancer development 2Mutation in blood stem cells provides clues to cancer development 3Inside rocks, implications for finding life on Mars 2Secrets of the sea yield stronger artificial bone 2Secrets of the sea yield stronger artificial bone 3Secrets of the sea yield stronger artificial bone 4
(Date:9/15/2014)... The chemistry, taste, and health effects of tea can vary ... the nonprofit American Botanical Council (ABC). Recent research by ... on the phytochemical compounds in tea ( Camellia sinensis ) ... in the Yunnan province of southwestern ... future of medicinal botanicals. Dr. Ahmed,s report on ...
(Date:9/15/2014)... La deuxième édition annuelle de l, ... sur la sensibilisation au plasma) sera célébrée du ... Plasma Protein Therapeutics Association (PPTA) et ... à : , Sensibiliser davantage la ... plasma-aphérèse , Reconnaître la contribution des donneurs ...
(Date:9/15/2014)... Hydro Dynamics, Inc. (HDI) of Rome, ... will be partnering with Proteaf Technologies (Proteaf) of ... implementing its Shock Wave Power Reactor (SPR) cavitation ... flow chemistry through process intensification has been widely ... for decades. The continuous chemistry has been ...
(Date:9/14/2014)... particularly ingenious when it comes to survival strategies. They ... hostile environment, for example during treatment with antibiotics. A ... a protective slime capsule consisting of sugar chains and ... have for the first time created a detailed three-dimensional ... blocks cross the bacterial cell wall, a crucial step ...
Breaking Biology Technology:Tea Taste and Quality Affected by Climate Change 2Tea Taste and Quality Affected by Climate Change 3Tea Taste and Quality Affected by Climate Change 4L' International Plasma Awareness Week célébrera les donneurs et braquera les projecteurs sur les maladies rares 2L' International Plasma Awareness Week célébrera les donneurs et braquera les projecteurs sur les maladies rares 3Hydro Dynamics Partners with the Continuous Flow Chemistry Experts of Proteaf Technologies 2New insights in survival strategies of bacteria 2
... professionals often face the challenge of delivering cost-effective ... both storage and bandwidth efficiency, while providing seamless, ... SecureZip, a new family of products designed for ... a cross-platform environment. The company also introduced a ...
... Inc. announced Wednesday that its net sales are up ... The Milwaukee-based company, which does business as Merge ... the acquisition of RIS Logic, a radiology information systems ... eFilm's picture archiving and communication system, or PACS, used ...
... has announced a new network switch and router ... second, using designs bought from a Wisconsin company. , ... Eau Claire, designs application-specific integrated circuits and systems-on-a-chip. SLE ... System Packet Interface Level 4 Phase 2, or SPI ...
Cached Biology Technology:PKWare launches new enterprise product line, adds new features to PKZip 2PKWare launches new enterprise product line, adds new features to PKZip 3Agilent's new network chip was designed in Wisconsin 2
UBN-1 (C-20)...
P2A4...
pETDuet-1 is designed for the coexpression of two target genes....
... Recognizes K+ Cl- ... shows no significant sequence ... or CCC.,SPECIES REACTIVITIES: The ... conserved in human, mouse, ...
Biology Products: