Did you look at the 1993 "Jurassic Park" block and astonished, "could that happen to the reality? Did the dinosaurs ever come back?" The idea that these powerful creatures could wander our Earth again, some day is for most people so fascinating and terribly in equal measure.
Even real scientists are interested in whether the evolving process could bring us back to the time of the tyrannosaurus. But Susie Maidment, a paleontologist in the Museum of Natural History in London, quickly dismissed the idea A DNA-filled mosquito preserved in the room for millions of years – like in "Jurassic Park" – could ever help to enjoy an endless dinosaurs.
"We have mosquitoes and bite flies from the time of dinosaurs, and they preserve in the room," Master said in a statement. "But when an ambro conserves the things, it tends to keep the shell, not the soft fabrics. So you do not get blood preserved within mosquitoes in bee." [Is It Possible to Clone a Dinosaur?]
Researchers found blood vessels and collagen in fossil dinosaurios, but these components do not have a DNA dinosaur in them. Unlike colágeno or other robust proteins, the DNA is very delicate and sensitive to the effects of sunlight and water. The oldest DNA in the fossilious record is about 1 million years, and the dinosaurs died about 66 million years ago.
Maidment added: "Although we seem to be blood of mosquitoes up to 50 million years, we have not found DNA, and to rebuild something, we need DNA."
Jamal Nasir, a geneticist at the University of Northampton in the UK, said he would not rule out the idea of dinosaurs evolving from the dead. According to his opinion, development is not fixed or planned. In other words, anything could happen. "Evolution is mostly stuck [randomly determined], and development does not necessarily have to go ahead; It could have multiple directions. I would argue that returning to dinosaurios is more likely to happen in reverse, because the buildings are already there. "
Of course, Nasir noted that the correct conditions should exist for dinosaurs to resurge. "Clearly, you could imagine virus pandemics that could break our genomes, our physiology and behaviors beyond our control," he said to Live Science. This, in turn, could create the right conditions for development to take a way to reinvent the old reptiles.
However, although development may not be directive in a particular sense, something that we know is that we do not see the same creature evolving again, Illnessed opposition. "We can see an animal that is closely related to a similar ecological niche – for example, ichthiosaurus were marine reptiles with long points, and dolphin-like body shapes and tails," she said Live Science. "Today we see the dolphins, and they probably occupy a similar ecological niche. But we would not describe dolphin like ichtosauron because they do not have the anatomical properties that make them be ichthyosaurs." [What If a Giant Asteroid Had Not Wiped Out the Dinosaurs?]
In addition, the dinosaurs never died completely in the first place, said Maidment. Birds evolved from eating dinosaurios, and thus in strict biological definition, all that evolved by this common ancestor, is a dinosaur, sharing the same anatomical characteristics, she said.
"Dinosaurs are still with us," said Master. "They say dinosaurs have passed away, but only the non-avian dinosaurs have passed away. Birds are dinosaurios, and birds are still evolving, so we will surely see new species of birds developing – and these will be new dinosaur species."
Some scientists even hinder the evolutionary process trying to reverse an ininent chicken in a dinosaur called "chickenosaurus". However, this animal, if ever achieved, would not be a retort of dinosaur, but rather a chicken-modified, Horn Horner, an association associated with the Burke Museum at the University of Washington, said Live Science.
Things changed dramatically over 66 million years, and if one day a dinosaur evolved back on Earth, it would be a very different world.
"A beast that has passed away naturally, maybe about 150 million years ago, will not recognize anything in this world, if you give it back," Master remarked "What will it eat when the grass did not have [yet] evolved back then? What is its function where we put it, does anyone have it? "
Say, maybe best let sleep dinosaurs lie, she said.
Originally published Live Science.