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Now Tyrannosaurus rex more than just dry bones.
Read more research issues on Forskning.no. Now Tyrannosaurus rex more than just dry bones. The sequencing of proteins from soft tissue in a 68 million years old skeleton could mark a new era for paleontologien.Nærmer we Jurassic Park? The well-known paleontologist John "Jack" Horner and his research team spent three years trying to dig out all the bones from sandstone at the bottom of Hell Creek Formation in Montana in USA.For to arrive at dinosaur, they had to wade through about 18 meters del monte kingsburg of sandstone. del monte kingsburg When the large femur was divided into two, because it did not fit into transport helicopter, it became possible for paleontologist Mary Schweitzer to take samples from inside the knokkelen.Som usually does not happen in such excavations, because they committed themselves del monte kingsburg to the utmost to preserve the fossil intact. DNA degraded. In Jurassic Park gets extinct animals new life by the scientists find damaged DNA in mosquito who subsisted on dinosaur blood, and then became trapped and preserved in rav.For to fill in the missing DNA sequences, this ancient genetic material spliced with DNA from reptiles , birds or amphibians del monte kingsburg - and presto - a whole park with dinosaurer.I reality it is not so simple. Biomolecules such as DNA degrade over time. Researcher environment has assumed that it was not possible to ascertain biological molecules in fossils that are older than a million years. Last week came news that swept this assumption aside. Schweitzer's research of paleontologists del monte kingsburg and medical researchers have managed to sequence proteins from the 68 million years old skeleton of a Tyrannosaurus rex.Dette shows that biological molecules such as proteins, and perhaps even DNA, under certain conditions, can be preserved over much longer time than had been believed. Moreover, it is the first time we are down to the molecular level when it comes to understanding the relationship between prehistoric animals and their relationship to living creatures. Number del monte kingsburg before DNA. Scientists have long wanted to get hold of sequences for proteins del monte kingsburg or DNA from extinct dyr.Selv whether there is DNA we know best as the code of life, some of the same information about the molecular evolution obtained from proteins, since they are made on the pattern DNAet.Med of this information comes the ability to test evolutionary del monte kingsburg connections and processes, but also the ability to extract information about how the body of animals like Tyrannosaurus rex fungerte.- There are number before DNA, in a way, says Jørn Hurum, paleontologist and dinosaur researcher at the Natural History Museum, University of Oslo. With new eyes. - People are going to look at prehistoric bones with new eyes, for now we see that they might carry tissues and information that no one thought could still exist, says Schweitzer, who works at North Carolina State University.- It's going to change the way paleontologists collects data on. Tyrannosaurus was under a lot of rocks - not affected by bacteria or groundwater. By extracting these bones I think we're going to discover that there are many copies like this, says Jack Horner.Både Horner and Schweitzer spoke to the press on a conference call arranged by the journal Science. - It's about that paleontologists use a little more time and dig in areas that are not so readily del monte kingsburg available, says Horner. Shorter than a gene. Professor Reidunn Aalen leader Department of Molecular Biosciences at the University of Oslo, and explains why it is so difficult to reconstruct old DNA.- There are multi