The oldest DNA to be sequenced shows how the mammoth genetics evolved

There is a lot we can learn from sequencing ancient DNA – and more surprises can arise when it comes to the world’s oldest DNA. An international team of scientists has succeeded in sequencing DNA obtained from mammoth molars that lived more than a million years ago. Given the age of these samples, this will be the oldest DNA to be sequenced. The results of this work, published this Wednesday in the journal Nature, are like traveling back in time: the analysis shows that the Colombian mammoth that lived in North America during the last Ice Age would be a mix of the woolly mammoth and a previously unknown mammoth descent .