Without such data it is impossible to rule out the possibility that the ancient Australian sequences result from modern human contamination of the bone during handling over the years, complicated by DNA damage. (talkorigins.org)
These biases can lead to hundreds of thousands of disagreements between different sequencing results for the same human genome. (sciencedaily.com)
In conclusion: a simple and quick way to consistent sequencing results. (scientistlive.com)