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

r mapping early habitat divergences onto the tree, Blank observes that the ancestors of each of the three kinds of prokaryotes inhabited one of Earth's three types of hydrothermal systems, which include sulfurous steam vents like those which smatter the Yellowstone caldera, hydrothermal deep-sea vents, and boiling silica-depositing springs.

"Is it a coincidence, then, that we have three hydrothermal habitats and three major groups of prokaryotes? We aren't sure, " she said. "This could suggest that we have some really ancient habitat specialization. These lineages specialize in these three habitats, and diverge in these habitats for many hundreds of million years before they start moving into other types of habitats."

The 'peculiar' ancestor

It isn't clear why bacteria diversified later, though environmental changes, like periods of global glaciation nicknamed "snowball Earth," could have provided the impetus that demanded microbial adaptation. Whatever the cause, new adaptive microbial traits can be very different from those of their "peculiar" ancestors. It seems that, on some level, humans and bacteria can relate.

"If we see these major patterns of divergence on Earth, we should expect to see similar patterns on life on Mars, that is, if life ever existed there," Blank said. "Not the same patterns, because Mars has had a different history, but we should see trends that are analogous. You would expect to see a peculiar ancestor specialized to a unique niche, eventually diverging into descendants that have very different traits than their ancestor did. These descendents would have adapted to changes that would've happened in Mars's history."


'"/>

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:8/19/2014)... to decrease China,s increasing caesarean section rate, suggests a ... An International Journal of Obstetrics and Gynaecology (BJOG) . ... rates in the world. Of 16 million babies born ... exact rate is not known, the current Chinese language ... rates ranging from 36% to 58%. However, before the ...
(Date:8/19/2014)... HOUSTON, Aug. 19, 2014 To improve students, ... poor grades, the University of Houston (UH) implemented ... for students at risk for failure. , ... Coordinating Board (THECB), the Department of Biology and ... first-year students taking "General Biology" for non-majors and ...
(Date:8/19/2014)... rating systems be used in supermarkets to encourage healthier ... sought to answer that very question by tracking the ... Guiding Stars System to rate the nutritional value of ... and Brand Lab,s David Just, PhD, and Brian Wansink ... sales records of over 150 Hannaford Supermarkets in the ...
Breaking Biology News(10 mins):Is China's 50 percent cesarean section delivery rate too high? 2Is China's 50 percent cesarean section delivery rate too high? 3University of Houson program earns kudos for improving grades, retaining students 2University of Houson program earns kudos for improving grades, retaining students 3
... of developing bipolar disorder depends in part on the combined, ... the brain, none of which is powerful enough to cause ... targeting the enzyme produced by one of these genes could ... research was conducted by scientists at the National Institutes of ...
... studied the molecular basis of memory storage, trying to ... stores genetic memory. In an important study published this ... report for the first time that memory storage can ... rat hippocampus by manipulating a so-called "memory molecule," a ...
... for their effects on fat development, researchers have discovered ... in mice without some of the side effects attributed ... as harmine, was first isolated more than 150 years ... preparations around the world, the team reports in the ...
Cached Biology News:Genetic roots of bipolar disorder revealed by first genome-wide study of illness 2Genetic roots of bipolar disorder revealed by first genome-wide study of illness 3New Brandeis research sheds light on memory by erasing it 2Fat screen delivers plant-derived chemical with antidiabetic effects 2
(Date:8/20/2014)... improve the health of your heart, researchers have discovered. ... a standard TENS machine like those designed to relieve ... the small raised flap at the front of the ... The stimulation changed the influence of the nervous system ... can drive failing hearts too hard. , Professor Jim ...
(Date:8/20/2014)... 20, 2014 WriteResult®, a leading provider ... it has expanded its myPROpad™ ePRO tablet with the ... one of the most widely used and well-respected Patient ... status. The EQ-5D is used during clinical trials and ... that can be used to demonstrate Health-Related Quality of ...
(Date:8/20/2014)... Bulgaria (PRWEB) August 20, 2014 ... was released today including improvements to the enterprise ... and connectors for Lucene, SOLR and Elasticsearch. This ... for this high performance triplestore – GraphDB™ was ... interested in deploying the only mature enterprise resilient ...
(Date:8/19/2014)... One of the major limitations in ... vascular supply. Nutrient and gas transport throughout synthetic ... for successful regeneration and integration into the patient’s ... vascularization and promote angiogenesis in a variety of ... and architecture, and enhancing scaffolds with stem cells. ...
Breaking Biology Technology:'Tickling' your ear could be good for your heart 2EQ-5D™ Assessment Now Available for iPad 2Ontotext Improves Its RDF Triplestore, GraphDB™ 6.0: Enterprise Resilience, Faster Loading Speeds and Connectors to Full-Text Search Engines Top the List of Enhancements 2Ontotext Improves Its RDF Triplestore, GraphDB™ 6.0: Enterprise Resilience, Faster Loading Speeds and Connectors to Full-Text Search Engines Top the List of Enhancements 3Ontotext Improves Its RDF Triplestore, GraphDB™ 6.0: Enterprise Resilience, Faster Loading Speeds and Connectors to Full-Text Search Engines Top the List of Enhancements 4Vascularization in Tissue Engineering Highlighted at 12th New Jersey Symposium on Biomaterials Science 2
... a new platform-independent Java client API for exchanging files ... HTTPS encrypted connections. , ,MOVEit API Java will supplement ... Windows API and a Perl API for Unix systems, ... ,The Java offering is targeted at mainframe, Solaris, Linux ...
... There are three locations on an Internet search page: top, ... a single page and other times its 100 feet long. ... sites identity is successful, only then will it will float ... if its submerged like a submarine, it will stay caught ...
... put his Ph.D. in theoretical physics to use not in ... affairs officer for the National Science Foundation . , ... residence for the week, he presented a public lecture ... Weapon, at which he discussed the relationship between writing science ...
Cached Biology Technology:Does your web site have visibility? 2Does your web site have visibility? 3NSF officer speaks on the future of journalism and science 2NSF officer speaks on the future of journalism and science 3
Plasmid expressing PLAP reporter gene....
Human SEAP ORF, provided in a pORF plasmid. pORF is an expression plasmid selectable with Ampicillin....
... of purified RNA samples., , This product ... aqueous RNA samples that have been pre-purified ... silica, oligo dT etc or other kits. ... necessary components for the stabilization of nanogram ...
... These 2800mL wide mouth PYREX Fernbach-style ... the center of the flask bottom to ... These triple baffled flasks have a Delong-style ... stainless steel closures. For plastic closures see ...
Biology Products: