How does one build a dinosaur? There’s the much-celebrated Crichton/Spielberg method, in which you extract dino DNA from a preserved prehistoric mosquito. But there are problems with this approach, says paleontologist Jack Horner in a recent TED Talk, and besides: there are plenty of spare dinosaur parts laying around our modern world from which to build a dinosaur. We just need to find the right ones.
Horner has spent a career digging up some of the best-preserved biological artifacts leftover from the dinosaurs’ tenure on this planet, but in none of them, not even the soft tissues like preserved blood vessels, could he or his team find intact DNA--the kind you need to clone a dinosaur a la Jurassic Park. So he and some colleagues are looking for dino-era DNA in dinosaurs’ descendants: modern birds.
Chickens, Horner says, have the keys to building a dinosaur etched into their genomes. Things like teeth, claws, and tails are still expressed in embryonic chickens, but are all turned off at some point during embryonic development by genes that evolution has made ubiquitous in modern birds. By turning these genes off, we’ve already engineered chickens expressing teeth, and by turning off still more we might resurrect more of the dinosaur’s prehistoric traits, no mosquito mining necessary.
_________________ The beginning of knowledge is the discovery of something we do not understand. - Frank Herbert Science without religion is lame, religion without science is blind. - Albert Einstein Knowledge is a powerful weapon, but only when its user can wield it.
Sat Jun 18, 2011 10:29 am
Ali
God
Joined: Sat Mar 07, 2009 10:36 pm Posts: 7825 Location: in my pants
_________________ School is all about learning lists and filling in forms. if information is not knowledge, i havent learned anything in all these years. http://lotsofpoo.mybrute.com “Augustus was touring the Empire and noticed a man in the crowd who bore a striking resemblance to himself. Intrigued, he asked: ‘Was your mother at one time in service at the Palace?’ ‘No, your highness,’ he replied, ‘but my father was.’” Emperor Augustus, 63BC - AD29.
But with a twist It's a cool vid, you should watch it xD
_________________ The beginning of knowledge is the discovery of something we do not understand. - Frank Herbert Science without religion is lame, religion without science is blind. - Albert Einstein Knowledge is a powerful weapon, but only when its user can wield it.
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