Navigation Links
Scientists confirm that parts of earliest genetic material may have come from the stars

Scientists have confirmed for the first time that an important component of early genetic material which has been found in meteorite fragments is extraterrestrial in origin, in a paper published on 15 June 2008.

The finding suggests that parts of the raw materials to make the first molecules of DNA and RNA may have come from the stars.

The scientists, from Europe and the USA, say that their research, published in the journal Earth and Planetary Science Letters, provides evidence that life's raw materials came from sources beyond the Earth.

The materials they have found include the molecules uracil and xanthine, which are precursors to the molecules that make up DNA and RNA, and are known as nucleobases.

The team discovered the molecules in rock fragments of the Murchison meteorite, which crashed in Australia in 1969.

They tested the meteorite material to determine whether the molecules came from the solar system or were a result of contamination when the meteorite landed on Earth.

The analysis shows that the nucleobases contain a heavy form of carbon which could only have been formed in space. Materials formed on Earth consist of a lighter variety of carbon.

Lead author Dr Zita Martins, of the Department of Earth Science and Engineering at Imperial College London, says that the research may provide another piece of evidence explaining the evolution of early life. She says:

"We believe early life may have adopted nucleobases from meteoritic fragments for use in genetic coding which enabled them to pass on their successful features to subsequent generations."

Between 3.8 to 4.5 billion years ago large numbers of rocks similar to the Murchison meteorite rained down on Earth at the time when primitive life was forming. The heavy bombardment would have dropped large amounts of meteorite material to the surface on planets like Earth and Mars.

Co-author Professor Mark

Contact: Colin Smith
Imperial College London

Page: 1 2

Related biology news :

1. Scientists find 245 million-year-old burrows of land vertebrates in Antarctica
2. Brain stem cells can be awakened, say Schepens scientists
3. Scientists demonstrate feasibility of preventing malaria parasite from becoming sexually mature
4. New fingerprint breakthrough by forensic scientists
5. Young mineral scientists rock!
6. Scientists discover stinging truths about jellyfish blooms in the Bering Sea
7. Scientists find bacteria thriving on a feast of seafloor rock
8. Leiden scientists sequence first female DNA
9. Scientists announce top 10 new species, issue SOS
10. U-M scientists remove thousands of aspens to glimpse forests future
11. Scientists reveal the lifestyle evolution of wild marine bacteria
Post Your Comments:
(Date:7/13/2015)... SAN JOSE, Calif. , July 13, 2015 ... the leading developer of human interface solutions, today ... second generation touch and display driver integration (TDDI) ... solution is the first to combine Synaptics , ... expertise with proven display driver technology developed in ...
(Date:7/9/2015)... Calif. , July 9, 2015  Synaptics Inc. (NASDAQ: ... solutions, announced today that it will report financial results ... Thursday, July 30, 2015 after the close of market. ... analysts and investors at 2:00 p.m. PT (5:00 p.m. ... To participate on the live call, analysts ...
(Date:7/9/2015)... 9, 2015  Unchained Labs just can,t get ... of Avid Nano. Avid Nano designs, develops and ... Also today, Unchained Labs UNcaged ... to use protein sizing system. The pUNk is ... hydrodynamic size, size distribution, aggregation population and molecular ...
Breaking Biology News(10 mins):Synaptics Announces Sampling of Second Generation TDDI Solutions 2Synaptics Announces Sampling of Second Generation TDDI Solutions 3Synaptics to Report Fourth Quarter, Fiscal Year 2015 Results on July 30 2Unchained Labs just can't get enough, acquires Avid Nano, rocks out the new pUNk! 2
... by global warming, habitat loss, and other human impacts. ... functioning of ecosystems that humans depend on for goods and ... their primary functions with fewer species in them? After ... Earth, are scientists any closer to attaining these answers? ...
... Maps are great for showing where things are. ... Two Michigan State University professors have developed interactive maps ... By using GIS (geographic information systems) technology, they are ... losing access to fresh produce and balanced nutrition. ...
... Nottingham have joined forces with colleagues at Loughborough University and ... keep the mould at bay for longer. Cold plasma ... from wounds safely. It was a chance discovery that led ... cold plasma might also be useful in the food sector. ...
Cached Biology News:Will loss of plant diversity compromise Earth's life-support systems? 2Will loss of plant diversity compromise Earth's life-support systems? 3Will loss of plant diversity compromise Earth's life-support systems? 4Will loss of plant diversity compromise Earth's life-support systems? 5Mapping food deserts 2Keeping soft fruit 'fur-free' for longer 2
(Date:7/27/2015)... ... July 27, 2015 , ... This is ... report provides a basic overview of the industry including definitions, classifications, applications and ... including development trends, competitive landscape analysis, and key regions development status. Development policies ...
(Date:7/27/2015)... 2015 Research presented at the 2015 AACC ... the studies that led to a fingerprick Ebola test ... disease to receive approval from the World Health Organization ... grip on West Africa by ... workers to isolate and treat these patients much faster ...
(Date:7/27/2015)... Junto Health, a company that helps major ... new technology solutions, today announced the launch of a ... in health care policy consulting. Working together with SPG, ... innovation process while, at the same time, they are ... health care finance and the delivery of health care ...
(Date:7/25/2015)... ... ... Technology leader Anton Paar offers the Abbemat T-Check ... of the measuring prism. This is required to achieve the most precise refractive ... requirements. It is likely that no refractometer manufacturers on the market can traceably ...
Breaking Biology Technology:2015 Biophotonics Market Global Research 22015 Biophotonics Market Global Research 3Rapid Ebola Test Could Play Key Role in Efforts to End Lingering Outbreak 2Rapid Ebola Test Could Play Key Role in Efforts to End Lingering Outbreak 3Junto Health Announces a Unique Partnership with Sachs Policy Group 2Junto Health Announces a Unique Partnership with Sachs Policy Group 3Junto Health Announces a Unique Partnership with Sachs Policy Group 4It’s T-Time for Refractometers: On-site Temperature Check Now Available 2
... Diplomat Specialty,Pharmacy today announced that Dr. Atheer ... Dr. Kaddis will serve as Vice President of,Managed ... Diplomat Specialty,Pharmacy,s President and CEO, Philip Hagerman. ... Managed Care,expertise we need to further develop competitive, ...
... 22 Laser Energetics,Inc. (Pink Sheets: LNGT) announced ... several medical and dental instrument suppliers regarding,the integration ... dental products. LEI,s BrightStar(TM) Alexandrite laser,s shorter ... system can enhance medical and,dental laser applications. The ...
... Shared Through Dynamic WikiAnswers Q&A ... ... show of support for National,Breast Cancer Awareness Month,,s question and ... where breast cancer survivors,friends and family have gathered to ask questions ...
Cached Biology Technology:Diplomat Specialty Pharmacy Hires Vice President of Managed Markets 2Laser Energetics to Integrate BrightStar(TM) Alexandrite Lasers in Medical and Dental Applications 2Laser Energetics to Integrate BrightStar(TM) Alexandrite Lasers in Medical and Dental Applications's WikiAnswers Supervisors Rallying for National Breast Cancer Awareness Month's WikiAnswers Supervisors Rallying for National Breast Cancer Awareness Month 3
... The DNA quantitation kit is used to ... the presence of RNA or protein. With this ... which can be detected with a VersaFluor or ... range of 10 ng per ml to 5 ...
... stimulating factors for assays of mouse hematopoietic ... fetal liver. Suitable for the growth ... when added to methylcellulose at a final ... Will also support growth of mouse ...
ImmunoPure Plus Immobilized Protein G, , , , Support: Cross-linked 6%, beaded agarose , Capacity: > 20 mg human IgG/ml of gel ...
Biology Products: