Genetic Archaeology
Recent News |  Archives |  Tags |  About |  Newsletter |  Submit News |  Links |  Subscribe to GeneticArchaeology.com RSS Fee Subscribe


More Articles
Deadly human pathogen Cryptococcus fully sequencedDeadly human pathogen Cryptococcus fully sequenced

Vitamin B3 might have been made in space, delivered to Earth by meteoritesVitamin B3 might have been made in space, delivered to Earth by meteorites

Appearance of night-shining clouds has increasedAppearance of night-shining clouds has increased

Planaria deploy an ancient gene expression program in the course of organ regenerationPlanaria deploy an ancient gene expression program in the course of organ regeneration

Researchers develop ErSb nanostructures with applications in infrared and terahertz rangesResearchers develop ErSb nanostructures with applications in infrared and terahertz ranges

Simplicity is key to co-operative robotsSimplicity is key to co-operative robots

Ancient shark fossil reveals new insights into jaw evolutionAncient shark fossil reveals new insights into jaw evolution

Gecko-like adhesives now useful for real world surfacesGecko-like adhesives now useful for real world surfaces

Sperm meets egg: Protein essential for fertilization discoveredSperm meets egg: Protein essential for fertilization discovered

Emerging research suggests a new paradigm for 'unconventional superconductors'Emerging research suggests a new paradigm for 'unconventional superconductors'

Chemists' work with small peptide chains may revolutionize study of enzymes and diseasesChemists' work with small peptide chains may revolutionize study of enzymes and diseases

Satellite shows high productivity from US corn beltSatellite shows high productivity from US corn belt

Running geese give insight into low oxygen toleranceRunning geese give insight into low oxygen tolerance

Researchers determine how mechanical forces affect T-cell recognition and signalingResearchers determine how mechanical forces affect T-cell recognition and signaling

The surprising consequences of banning chocolate milkThe surprising consequences of banning chocolate milk

Galactic serial killerGalactic serial killer

Positive, negative thinkers' brains revealedPositive, negative thinkers' brains revealed

Babies prefer fairness -- but only if it benefits them -- in choosing a playmateBabies prefer fairness -- but only if it benefits them -- in choosing a playmate

A new twist makes for better steel, researchers findA new twist makes for better steel, researchers find

Renewable energy market share climbs despite 2013 dip in investmentsRenewable energy market share climbs despite 2013 dip in investments

Sniff study suggests humans can distinguish more  than 1 trillion scentsSniff study suggests humans can distinguish more than 1 trillion scents

Study finds gaming augments players' social livesStudy finds gaming augments players' social lives

A breakthrough in creating invisibility cloaks, stealth technologyA breakthrough in creating invisibility cloaks, stealth technology

Overcoming structural uncertainty in computer modelsOvercoming structural uncertainty in computer models

Monkey caloric restriction study shows big benefit; contradicts earlier studyMonkey caloric restriction study shows big benefit; contradicts earlier study

Researchers developed world's first fluorescent sensor to detect date rape drugResearchers developed world's first fluorescent sensor to detect date rape drug

Copied from nature: Detecting software errors via genetic algorithmsCopied from nature: Detecting software errors via genetic algorithms

Turning back the clock on aging muscles?Turning back the clock on aging muscles?

New study finds differences in concussion risk between football helmetsNew study finds differences in concussion risk between football helmets

The final nail in the Jurassic Park coffin: Next generation sequencing reveals absence of DNA in sub-fossilized insects (9/15/2013)

Tags:
amber, dinosaurs, dna, fossils, insects, polymerase, preservation, sequencing, techniques
This image shows a sub-fossilized insect in copal. -  Dr. David Penney, University of Manchester
This image shows a sub-fossilized insect in copal. - Dr. David Penney, University of Manchester

It is hardly possible to talk about fossil insects in amber without the 1993 movie Jurassic Park entering the debate. The idea of recreating dinosaurs by extracting DNA from insects in amber has held the fascination of the public for two decades. Claims for successful extraction of DNA from ambers up to 130 million-years-old by various scientists in the early 1990s were only seriously questioned when a study at the Natural History Museum, London, was unable to replicate the process. The original claims are now considered by many to be a text-book example of modern contaminant DNA in the samples. Nonetheless, some scientists hold fast to their original claims.

Research just published in the journal The Public Library of Science ONE (PLOS ONE) by a team of researchers from the Faculty of Life Sciences at The University of Manchester can now confirm that the existence of DNA in amber fossils is highly unlikely. The team led by amber expert Dr David Penney and co-ordinated by ancient DNA expert Professor Terry Brown used highly-sensitive 'next generation' sequencing techniques - the most advance type of DNA sequencing - on insects in copal, the sub-fossilized resin precursor of amber.

The research was conducted wearing full forensic suits in the dedicated ancient DNA facility at The University of Manchester, which comprises a suite of independent, physically isolated laboratories, each with an ultra-filtered air supply maintaining positive displacement pressure and a managed access system.

According to Professor Brown: "In the original 1990s studies DNA amplification was achieved by a process called the polymerase chain reaction (PCR), which will preferentially amplify any modern, undamaged DNA molecules that contaminate an extract of partially degraded ancient ones to give false positive results that might be mistaken for genuine ancient DNA. Our approach, using 'next generation' sequencing methods is ideal for ancient DNA because it provides sequences for all the DNA molecules in an extract, regardless of their length, and is less likely to give preference to contaminating modern molecules.

The team concluded that their inability to detect ancient DNA in relatively young (60 years to 10,600 years old) sub-fossilized insects in copal, despite using sensitive next generation methods, suggests that the potential for DNA survival in resin inclusions is no better, and perhaps worse, than that in air-dried museum insects (from which DNA has been retrieved using similar techniques). This raises significant doubts about claims of DNA extraction from fossil insects in amber, many millions of years older than copal.

Dr Penney said: "Intuitively, one might imagine that the complete and rapid engulfment in resin, resulting in almost instantaneous demise, might promote the preservation of DNA in a resin entombed insect, but this appears not to be the case. So, unfortunately, the Jurassic Park scenario must remain in the realms of fiction.

Note: This story has been adapted from a news release issued by the University of Manchester

Comments:

1. G-Man

9/16/2013 3:31:23 PM MST

We could take living animals (birds), which supposedly evolved from dinosaurs, and reverse engineer them.


Leave a Reply:

Search

New Articles
Trisomy 21: How an extra little  chromosome throws the  entire genome off balanceTrisomy 21: How an extra little chromosome throws the entire genome off balance

At the origin of cell divisionAt the origin of cell division

Study finds new links between number of duplicated genes and adaptation

Does germ plasm accelerate evolution?

Faithful allies since the CretaceousFaithful allies since the Cretaceous

Ferns borrowed genes to flourish in low lightFerns borrowed genes to flourish in low light

Study tests theory that life originated at deep sea ventsStudy tests theory that life originated at deep sea vents

Scientists firm up origin of cold-adapted yeasts that make cold beerScientists firm up origin of cold-adapted yeasts that make cold beer

Lactase persistence alleles reveal ancestry of southern African Khoe pastoralists

Examination of a cave-dwelling fish finds a possible genetic link to human disordersExamination of a cave-dwelling fish finds a possible genetic link to human disorders

New research initiative investigates gene regulation in evolution and development

The Neanderthal in usThe Neanderthal in us

The human 'hairless' gene identified: One form of baldness explained

Going batty for jumping DNA as a cause of species diversity

Ancient whodunit may be solved: The microbes did it!



Archives
April 2014
March 2014
February 2014
January 2014
December 2013
November 2013
October 2013
September 2013
August 2013
July 2013
June 2013
May 2013
April 2013
March 2013
February 2013
January 2013
December 2012
November 2012
October 2012
September 2012
August 2012
July 2012
June 2012
May 2012
April 2012
March 2012
February 2012
January 2012
December 2011
November 2011
October 2011
September 2011
August 2011
July 2011
June 2011
May 2011
April 2011
March 2011
February 2011
January 2011
December 2010
November 2010
October 2010
September 2010
August 2010
July 2010
June 2010
May 2010
April 2010
March 2010
February 2010
January 2010
December 2009
November 2009
October 2009
September 2009
August 2009
July 2009
June 2009
May 2009
April 2009
March 2009
February 2009
January 2009
December 2008
November 2008
October 2008
September 2008
August 2008
July 2008
June 2008
May 2008
April 2008
March 2008
February 2008
January 2008
December 2007
November 2007
October 2007
September 2007
August 2007
July 2007
June 2007
May 2007
April 2007
March 2007
February 2007
January 2007
November 2006
October 2006
September 2006
June 2005
October 2004
July 2001


Science Friends
Agricultural Science
Astronomy News
Biology News
Biomimicry Science
Cognitive Research
Chemistry News
Tissue Engineering
Cancer Research
Cybernetics Research
Electonics Research
Forensics Report
Fossil News
Genetics News
Geology News
Microbiology Research
Nanotech News
Parenting News
Physics News


  Archives |  Submit News |  Advertise With Us |  Contact Us |  Links
Use of this site constitutes acceptance of our Terms of Service and Privacy Policy. All contents © 2000 - 2015 Web Doodle, LLC. All rights reserved.