Navigation Links
Map of life on Earth could be used on Mars

ry of the core of the bacterial cell. The core is that which is not undergoing this lateral gene transfer, or does it extremely rarely."

Jumping genes

Jumping genes may be a headache for researchers, but they serve an important ecological purpose, helping other organisms to succeed in their habitats, and can illuminate trait development across the tree of life.

"We try to construct the core with gene sequences, and then we look at the distribution of traits such as those involved in metabolism by laying it onto the tree," she said.

Timely appearances of certain traits among prokaryotes on the tree of life can betray a trend of habitat divergence, facilitated by lateral gene transfer. The emergence of traits corresponding to measurable changes in the known geologic record allow researchers to date organisms with relative certainty. Blank can then use chronological data to analyze niche specialization, "where these organisms like to grow," among members of each life domain over geologic time.

Habitat divergence among bacteria is consistent with patterns of divergence among the other prokaryotes, Blank's research shows. She notes a pervasive trend of cyanobacterial organisms diverging from low-salinity environments into marine environments over time.

"We have the ancestral Archeae ?it diverges into two major lineages, the Crenarchaeota and the Euryarchaeota, one which grows in marine environments, the other on continents, " Blank said. "They grow and diverge for perhaps a billion years, and then they start colonizing each other's environments. The marine Euryarchaeota eventually colonize the terrestrial environments and the Crenarchaeota colonize the marine environments. My point is that it could have taken a very long time for them to come back and to form even more complex ecosystems. So the literal interpretation of these patterns is that early habitat specialization could have lasted for a billion years."

Afte
'"/>

Source:Washington University in St. Louis


Page: 1 2 3

Related biology news :

1. UCSB scientists probe sea floor venting to gain understanding of early life on Earth
2. U.N. mulls the protection of Earths forests
3. ORNL, UC Berkeley unravel real-world clues to Earths mysteries
4. Study casts doubt on Snowball Earth theory
5. Evolution of life on Earth may hold key to finding life in outer space
6. Bacteria which sense the Earths magnetic field
7. New study pinpoints epicenters of Earths imminent extinctions
8. Understanding the oceans microbes is key to the Earths future
9. NASAs AURA satellite peers into Earths ozone hole
10. New maps reveal true extent of human footprint on Earth
11. Embryos tell story of Earths earliest animals
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Map life Earth could used Mars

(Date:7/30/2014)... effects of climate change on the world,s animal ... factors, according to a new paper by a ... of Queensland, and other organizations. The authors claim ... the point when it comes to climate change. ... scientists focus on the "direct" threats of changing ...
(Date:7/30/2014)... the shortest distance between two points is a straight ... have been taking the familiar axiom to heart. ... to be intense, with each racing for the chance ... species, sperm form cooperative groups that allow them to ... A new study, conducted by Heidi Fisher, a post-doctoral ...
(Date:7/30/2014)... The Governing Board of the Entomological Society of America ... for 2014. The election as a Fellow acknowledges outstanding ... following: research, teaching, extension, or administration. The following Fellows ... Annual Meeting -- which will be held November 16-19, ... BOSQUE-PREZ is a professor with the Department of ...
Breaking Biology News(10 mins):Conservation scientists asking wrong questions on climate change impacts on wildlife 2When cooperation counts 2When cooperation counts 3Entomological Society of America recognizes 2014 fellows 2Entomological Society of America recognizes 2014 fellows 3Entomological Society of America recognizes 2014 fellows 4Entomological Society of America recognizes 2014 fellows 5Entomological Society of America recognizes 2014 fellows 6Entomological Society of America recognizes 2014 fellows 7Entomological Society of America recognizes 2014 fellows 8Entomological Society of America recognizes 2014 fellows 9Entomological Society of America recognizes 2014 fellows 10Entomological Society of America recognizes 2014 fellows 11Entomological Society of America recognizes 2014 fellows 12Entomological Society of America recognizes 2014 fellows 13Entomological Society of America recognizes 2014 fellows 14Entomological Society of America recognizes 2014 fellows 15Entomological Society of America recognizes 2014 fellows 16Entomological Society of America recognizes 2014 fellows 17
... 11, 2013 Elsevier, a world-leading provider of scientific, ... launch of Journal of Forensic Radiology and Imaging ... the International Society of Forensic Radiology and Imaging (ISFRI). ... of forensic radiology and imaging, JOFRI aims ...
... Discovery , the flagship journal of the American Association ... American research centres, presents significant results in treating cancer ... This marks the first time that the therapeutic effect ... Barcelona, 11 February 2013. A study led by Dr ...
... By thinking of cells as programmable robots, researchers at Rice ... tiny blood vessels that feed the brain and help people ... Amina Qutub and her colleagues simulate patterns of microvasculature cell ... their lab. Eventually, they want to develop the ability to ...
Cached Biology News:Elsevier announces the launch of a new journal: Journal of Forensic Radiology and Imaging 2First-in-man study demonstrates the therapeutic effect of RNAi gene silencing in cancer treatment 2First-in-man study demonstrates the therapeutic effect of RNAi gene silencing in cancer treatment 3Rice University lab show how blood vessels regroup after stroke 2Rice University lab show how blood vessels regroup after stroke 3
(Date:7/30/2014)... W. R. Grace & Co. ... REVELERIS® Prep purification system , a dual-mode ... other researchers to perform both flash and preparative ... With the REVELERIS® Prep purification system, researchers can ... with a simple touch of the screen, giving ...
(Date:7/30/2014)... July 30, 2014  Decision Resources Group finds ... directors in the United States ... market penetration will be the level of savings ... the expected lower cost to patients. Payers plan ... meet their pricing expectations in order to encourage ...
(Date:7/30/2014)... SAN FRANCISCO , July 30, 2014 /PRNewswire/ ... Transplant Congress evaluated the safety and efficacy of ... antibody-mediated rejection following kidney transplants in highly sensitized ... important inhibitor of the complement system. ... results in significant increases in the levels of ...
(Date:7/30/2014)... , July 30, 2014  The Chicago Bears ... American Academy of Dermatology (Academy) in an effort to ... Chicago Bears will host free SPOT me™ skin cancer ... 2 at Soldier Field. SPOT me™ is an ... about the dangers and risks of skin cancer, and ...
Breaking Biology Technology:Grace Launches New REVELERIS® Prep Purification System 2Surveyed U.S. Payers Expect Cost Savings to MCOs and Patients to be the Strongest Drivers of Biosimilar Uptake 2Surveyed U.S. Payers Expect Cost Savings to MCOs and Patients to be the Strongest Drivers of Biosimilar Uptake 3Study Suggests C1-INH May Aid in Prevention of Antibody-Mediated Rejection Following Kidney Transplant 2Study Suggests C1-INH May Aid in Prevention of Antibody-Mediated Rejection Following Kidney Transplant 3Chicago Bears Join the American Academy of Dermatology in Fight against Skin Cancer 2Chicago Bears Join the American Academy of Dermatology in Fight against Skin Cancer 3Chicago Bears Join the American Academy of Dermatology in Fight against Skin Cancer 4
... 9 Boston Scientific,Corporation (NYSE: BSX ) ... has revised its Rating Outlook on the Company, ... long-term credit rating of,BB+., Fitch said the ... is making toward stabilizing its drug-eluting stent and ...
... Pressure,BioSciences, Inc. (Nasdaq: PBIO ) ("PBI") ... (PNNL), the Harvard School of,Public Health (HSPH), the ... Drug Administration (FDA) presented data generated through the,use ... last week,s,(June 1-5) American Society for Mass Spectrometry,s ...
... Inc. (Nasdaq:,NUVA), a medical device company focused on developing ... today,that Kevin O,Boyle, Executive Vice President and Chief Financial ... Annual Growth Stock,Conference at the Four Season Hotel, Chicago, ... A live Web cast of the presentation will ...
Cached Biology Technology:Boston Scientific Welcomes Revised Outlook From Fitch Ratings 2Boston Scientific Welcomes Revised Outlook From Fitch Ratings 3Four Independent Research Groups Present Data Generated by Pressure Cycling Technology (PCT) at the ASMS Conference on Mass Spectrometry and Allied Topics in Denver, CO 2Four Independent Research Groups Present Data Generated by Pressure Cycling Technology (PCT) at the ASMS Conference on Mass Spectrometry and Allied Topics in Denver, CO 3Four Independent Research Groups Present Data Generated by Pressure Cycling Technology (PCT) at the ASMS Conference on Mass Spectrometry and Allied Topics in Denver, CO 4NuVasive to Present at William Blair 28th Annual Growth Stock Conference 2NuVasive to Present at William Blair 28th Annual Growth Stock Conference 3
PC based system for superior chemifluorescent, chemiluminescent, fluorescent and colorimetric, microarray and microscope imaging and analysis....
Pendrin (H-195)...
Request Info...
Conveniently document gels, films and membranes with a high quality thermal printer. , Compact, footprint printer , Supplies 256 gray scale for high resolution, archive-quality thermal film prints...
Biology Products: