The idea that mutations are random is an important concept for evolutionary theory. Yet, multiple areas of research are telling us that mutation placement and type are not at all random. There is also no reason to believe that mutation rates have remained constant...
The fact that ancient DNA exists at all is a minor miracle. And now that we have figured out how to extract it efficiently and sequence it accurately (more or less), we are suddenly able to answer many long-standing historical riddles. Dr C explains how ancient...
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