Previously, archaeologists can learn about the life of human ancestors only the bones, tools and implements, but from 1960 a stronger position in archeology began to take DNA studies. In-depth research geneticists sometimes offered their version of events other than the opinions of archaeologists. Now archaeologists and geneticists were finally able to get the same information about the study and confirm each other.
The situation changed with the Restatement genetics method for determining the frequency of mutations in DNA. This frequency - a sort of molecular "clocks" that allow us to calculate the exact age of the genetic type. The method is simple: the number of different nucleotides in the DNA of the two species shows how much time has passed since he was alive common ancestor of these species. To make the calculations as accurate as possible, geneticists need to know the rate at which changes in DNA nucleotides. Previous studies suggested that the rate of change of nucleotides - 1 mutation in one billion years. However, recent studies have shown that in human DNA nucleotide mutates every 1 time in 2 billion years, ie molecular "clock" actually work 2 times slower than previously thought.
Therefore geneticist Oylin Scully (Aylwyn Scally) and his colleagues at Wellcome Trust Sanger Institute in Hinxton, UK, re-counted data obtained before the ancestors of man, based on a new rate change nucleotides. They studied DNA samples from bones belonging to Homo heidelbergensis, grandparent Neanderthals. According to archaeologists, the age is 400-600 thousand years, and that was when there was an offshoot of the ancestors of modern humans. Earlier Geneticists believe that this event occurred much earlier - 270-435 thousand years ago, but given the newly defined mutation rate of DNA, the researchers came to the conclusion that the separation occurred 600,000 years ago, which fully corresponds to archeologists.
Archaeologist Jeff Rose (Jeff Rose) from the University of Birmingham (University of Birmingham) confident that an agreement between the archaeologists and geneticists - a significant event. It will help to confirm many archaeologists received data. In particular, the earlier genetics estimate that the ancestors of Europeans and Asians left Africa 60,000 years ago, while archaeologists have dated this outcome 100,000 years. Recalculation of genetic data with the new speed of the molecular "clock" shows that this result did not occur 60 and 120 thousand years ago, which coincides with the opinion of archaeologists.
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The situation changed with the Restatement genetics method for determining the frequency of mutations in DNA. This frequency - a sort of molecular "clocks" that allow us to calculate the exact age of the genetic type. The method is simple: the number of different nucleotides in the DNA of the two species shows how much time has passed since he was alive common ancestor of these species. To make the calculations as accurate as possible, geneticists need to know the rate at which changes in DNA nucleotides. Previous studies suggested that the rate of change of nucleotides - 1 mutation in one billion years. However, recent studies have shown that in human DNA nucleotide mutates every 1 time in 2 billion years, ie molecular "clock" actually work 2 times slower than previously thought.
Therefore geneticist Oylin Scully (Aylwyn Scally) and his colleagues at Wellcome Trust Sanger Institute in Hinxton, UK, re-counted data obtained before the ancestors of man, based on a new rate change nucleotides. They studied DNA samples from bones belonging to Homo heidelbergensis, grandparent Neanderthals. According to archaeologists, the age is 400-600 thousand years, and that was when there was an offshoot of the ancestors of modern humans. Earlier Geneticists believe that this event occurred much earlier - 270-435 thousand years ago, but given the newly defined mutation rate of DNA, the researchers came to the conclusion that the separation occurred 600,000 years ago, which fully corresponds to archeologists.
Archaeologist Jeff Rose (Jeff Rose) from the University of Birmingham (University of Birmingham) confident that an agreement between the archaeologists and geneticists - a significant event. It will help to confirm many archaeologists received data. In particular, the earlier genetics estimate that the ancestors of Europeans and Asians left Africa 60,000 years ago, while archaeologists have dated this outcome 100,000 years. Recalculation of genetic data with the new speed of the molecular "clock" shows that this result did not occur 60 and 120 thousand years ago, which coincides with the opinion of archaeologists.
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