HOME >> BIOLOGY >> NEWS
Toward more effective paleolgenetic analysis

DNA preserved in bones undergoing fossilization deteriorates up to 50 times faster when stored in a museum than when the bones are buried in the ground. This has just been shown by a paleogenetics team led by Eva-Maria Geigl (Institut Jacques Mono / CNRS Paris). This study, which was published in the Proceedings of the US National Academy of Sciences 8 January 2007, shows that in order to improve the quality of paleogenetic analyses, archeological and paleontological remains should be treated like biological samples both during and after excavation. The findings show the need for a new methodology for the excavation, treatment and preservation of fossils. They also open up new prospects for paleogenetic research into freshly excavated fossils.

In paleogenetic research, it is essential to have well-preserved archeological material in order to obtain reliable results. At present, such research is only too rarely the result of close collaboration between the various disciplines involved: molecular biologists, archeologists, paleontologists and curators. Moreover, biologists mostly carry out such studies on samples stored in collections or in museums. However, there was no reason to suppose that the treatment carried out by fieldworkers (archeologists, paleontologists and curators), as well as storage conditions, were compatible with a paleogenetic approach. In fact, such analyses were often subject to a high failure rate, due partly to a lack of any ancient DNA detected by PCR , or to contamination by modern DNA.

An extensive study of around 250 fossil bones from 600 to 50 000 year old herbivores was carried out thanks to international cooperation between the Institut Jacques Monod at CNRS, the Museum of Natural Sciences in Madrid and a number of European, Turkish and Japanese paleontologists and archeologists. The work showed that mitochondrial DNA from freshly excavated, untreated fossil bones was amplified with a success rate of 46%. How
'"/>

Contact: Monica McCarthy
monica.mccarthy@cnrs-dir.fr
33-144-965-191
CNRS
17-Jan-2007


Page: 1 2 3

Related biology news :

1. Toward improved forms of a time-tested cholesterol-fighter
2. Dengue and other hemorrhagic fevers: Towards a first potential treatment
3. Towards predicting late-stage radiation toxicity
4. Toward a less expensive, more convenient treatment of Gauchers disease
5. Towards the mechanism of cell respiration
6. Towards a unified model of transcription termination
7. Towards a cheap and easy way to monitor HIV/AIDS
8. Towards targeted lung cancer treatment
9. Toward a better understanding of taste and smell impairments
10. Smokeless tobacco more effective than cigarettes for delivering dangerous carcinogens into the body
11. Developing a more effective vaccine for tuberculosis

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/5/2017)... 4, 2017 KEY FINDINGS The ... at a CAGR of 25.76% during the forecast period ... primary factor for the growth of the stem cell ... MARKET INSIGHTS The global stem cell market ... and geography. The stem cell market of the product ...
(Date:3/30/2017)... -- Trends, opportunities and forecast in this market to ... AFIS, iris recognition, facial recognition, hand geometry, vein recognition, ... industry (government and law enforcement, commercial and retail, health ... and by region ( North America , ... , and the Rest of the World) ...
(Date:3/24/2017)... Mar 24, 2017 Research and Markets has ... Market Analysis & Trends - Industry Forecast to 2025" report ... ... at a CAGR of around 15.1% over the next decade to ... report analyzes the market estimates and forecasts for all the given ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... ... October 11, 2017 , ... ComplianceOnline’s Medical Device Summit is back for ... June 2018 in San Francisco, CA. The Summit brings together current and former FDA ... board directors and government officials from around the world to address key issues in ...
(Date:10/11/2017)... LAGUNA HILLS, Calif. , Oct. 11, 2017 ... London (ICR) and University of ... prognostic tool to risk-stratify patients with multiple myeloma (MM), in ... nine . The University of Leeds ... by Myeloma UK, and ICR will perform the testing services ...
(Date:10/11/2017)... ... October 11, 2017 , ... ... has granted orphan drug designation to SBT-100, its novel anti-STAT3 (Signal Transducer and ... of osteosarcoma. SBT-100 is able to cross the cell membrane and bind intracellular ...
(Date:10/10/2017)... ... October 10, 2017 , ... For the second ... a US2020 STEM Mentoring Award. Representatives of the FirstHand program travelled to Washington, ... from US2020. , US2020’s mission is to change the trajectory of STEM education ...
Breaking Biology Technology:
Cached News: