Two billion-year-old riddle of life is solved as ’nature’s big bang’ is mapped for first time
2010 10 09
A two billion-year-old riddle of how the basic building blocks of life were formed has been solved by scientists.
’Nature’s big bang’ - when two single cells fused into one living organism - has been mapped for the first time by researchers led by a team from Ireland.
Dr James McInerney, senior biologist at the National University of Ireland (NUI) in Maynooth, said the discovery in effect traced humans’ oldest ancestor.
Remarkable: Scientists have now mapped nature’s ’big bang’, which is when two organisms fuse together.
’This was a remarkable event, which appears to have happened only once,’ Mr McInerney said.
’These two primitive single cell life forms came together in an event that essentially allowed nature to grow big.’
Dr McInerney said the research would help explain what gave rise to all multi-cell organisms we know today - insects, plants, animals and humans.
Using genetics and information from the mapping of the yeast genome, evidence of two originally single cells, known as prokaryotes, were discovered in a eukaryote which formed with a nucleus.
Researchers were able to show that yeast - a model system for molecular biology - contained one eukaryote genome which came from two distinct different prokaryote genomes.
Dr McInerney said: ’It is in the nucleus that we find the DNA of all species, and for years it had been a puzzle as to how the first nucleus was created. Now we know.’
Researchers believe this can be dated to about two billion years after the oldest micro-fossils.
The discovery follows the mapping of the family tree of all nature by researchers at NUI Maynooth.
Dr McInerney said: ’Essentially, you had an organism, like the Minotaur in ancient Greece, and this, in biological terms is what we hypothesised was the common ancestor of all eukaryotic life.
’Because humans are eukaryotes, we were, in essence, trying to trace the deepest human ancestor.’
Dr McInerney, of NUI Maynooth’s Bioinformatics and Molecular Evolution Unit of the Department of Biology, collaborated with Dr James Cotton at the world-famous Sanger Institute in Cambridge, England, to make the discovery.
Their work has been published in the eminent Proceedings of the National Academy of Sciences, USA.
The discovery was made after 10 years research at NUI Maynooth and followed the sequencing of the yeast genome in 1997.
Article from: dailymail.co.uk
Revised theory of gravity doesn’t predict a Big Bang
Big Bang experiment may reveal dark universe: CERN
Structure of HIV genome ’decoded’
Mammoth’s genome pieced together
’Watermarks’ written in first artificial genome
First genome transplant turns one species into another
Latest News from our Front Page
Hungary’s Orban Bashes Liberal Immigration Policy
2014 08 29
Hungary’s Prime Minister Viktor Orban on Monday lashed out against immigration, setting one of the main policy objectives of his next term in power after winning parliamentary elections in April.
“The goal is to cease immigration whatsoever,” said Hungary’s prime minister. “I think the current liberal immigration policy, which is considered obvious and morally based, is hypocrite,” Mr. Orban said.
At a ...
China’s “Duplitecture” Cities Mimic the World’s Greatest Architectural Hits
2014 08 29
The best knockoffs in the world are in China. There are plenty of fake designer handbags and Rolexes, but China’s knockoffs go way beyond fashion. There are knockoff Apple stores that look so much like the real thing that some employees believe they are working in real Apple stores. And then there are entire knockoff cities. There are Venices with ...
Kiev loses control of Novoazovsk, rebel troops advance in southeast Ukraine
2014 08 29
Kiev’s troops had to leave the eastern Ukrainian city of Novoazovsk to save their lives, said the country’s Security and Defense Council. The authorities admitted that self-defense forces are advancing and leading a counteroffensive in the southeast.
Along with Novoazovsk, Kiev troops have lost control over the villages of Amvrosiivka and Starobeshevo in the Donetsk Region of Eastern Ukraine.
According to Ukraine’s ...
Mohammed is most popular name in Oslo
2014 08 29
For the first time in the capital city’s history, Mohammed is the most common name for boys and men, said a study on Thursday.
Statistics Norway (Statistisk Sentralbyrå - SSB) has counted the population of Oslo and found that Mohammed is the most common male name in Oslo for the first time ever.
Jørgen Ouren of SSB said to NRK: “It is ...
Beaten to Death at McDonald’s
2014 08 29
To the four clean-cut college freshman out on a double date, it had seemed like a typical McDonald’s: spanking clean, well-lighted, and safe. It was in a good neighborhood too, right next to Texas A&M University in College Station -- a campus known for its friendly atmosphere and official down-home greeting: “howdy.”
Shortly after 2 A.M. that Sunday, they pulled into ...
|More News » |