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What is NOT a concern with those who analyse the DNA of ancient hominins.

a) Contamination by laboratory workers handling the specimens b) That the ancient DNA might infect the archeologists. c) The degradation of the DNA by chemical damage over time d) The introduction of modern DNA onto the sample by archeologists in the field site.

13 May 2013
Could you think of how badly some of these factors might be a concern? Obviously 3 of them are a concern - perhaps it would be easier to identify them? The one of least concern would then be your answer.
13 May 2013
If you look at the options, three of them sound plausible and one sounds like the plot of a bad sci-fi movie - that one is your answer!!!
15 May 2013
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