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The idea of extracting and reproducing DNA material of dinosaurs appears most prominently in the 1993 motion picture ''{{w|Jurassic Park (film)|Jurassic Park}}''. The concept is regarded by scientists as rather implausible because DNA disintegrates soon after the death of the organism (read: [http://rspb.royalsocietypublishing.org/content/279/1748/4724 around 500 years]) and would not be preserved in fossils.
 
The idea of extracting and reproducing DNA material of dinosaurs appears most prominently in the 1993 motion picture ''{{w|Jurassic Park (film)|Jurassic Park}}''. The concept is regarded by scientists as rather implausible because DNA disintegrates soon after the death of the organism (read: [http://rspb.royalsocietypublishing.org/content/279/1748/4724 around 500 years]) and would not be preserved in fossils.
  
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Furthermore, the science of genetic engineering is not yet able to accomplish major alterations in complex genomes. While mice and other small vertebrates have successfully been modified for research purposes, the daily use of genetic engineering is limited to plants and {{w|Unicellular organism|monads}}. That besides, the less closely related the starting species are to each other, the more difficult it would be to successfully combine them. So while the field of genetic engineering is always advancing, combining the body of a modern-day mammal with the tail of a dinosaur will remain a pipe dream for a long time yet. (Also, there are no known cases of preserved non-avian dinosaur DNA being discovered, and current chemistry knowledge indicates that no DNA can survive over 1 million years.)
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Furthermore, the science of genetic engineering is not yet able to accomplish major alterations in complex genomes. While mice and other small vertebrates have successfully been modified for research purposes, the daily use of genetic engineering is limited to plants and {{w|Unicellular organism|monads}}. That besides, the less closely related the starting species are to each other, the more difficult it would be to successfully combine them. So while the field of genetic engineering is always advancing, combining the body of a modern-day mammal with the tail of a dinosaur will remain a pipe dream for a long time yet.
  
 
In general, genetic engineering is a highly controversial topic with regards to the responsibility of science. While some praise the scientific progress and welcome the possibilities it brings, others fear that genetic science might enable man to alter the ways of nature and to presume the role of an almighty creator. The creation of hybrid animals (so called ''{{w|Chimera (genetics)|Chimeras}}'') is often regarded as the ultimate {{w|hubris}} and the climax of moral decay. Some countries have therefore installed strong legal restrictions for the modification of genetic material extracted from humans and animals.
 
In general, genetic engineering is a highly controversial topic with regards to the responsibility of science. While some praise the scientific progress and welcome the possibilities it brings, others fear that genetic science might enable man to alter the ways of nature and to presume the role of an almighty creator. The creation of hybrid animals (so called ''{{w|Chimera (genetics)|Chimeras}}'') is often regarded as the ultimate {{w|hubris}} and the climax of moral decay. Some countries have therefore installed strong legal restrictions for the modification of genetic material extracted from humans and animals.

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