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Here's something else I found on the difference between HVR1 and HVR2. I think this is part of a FAQ for FTDNA
35. If two people share an identical HVR-1 panel, what's the approximate TMRCA (Time to Most Recent Common Ancestor)?

This is very hard to estimate, because of the variable mutation rates in different parts of the mtDNA molecule. FTDNA gives 52 generations as the median -- that is, 50% of people who match in HVR1 would find their common ancestor in 52 generations or less, while the other 50% would have to keep on looking.

36. If the HVR-2 panel matches as well, what's the approximate TMRCA?

FTDNA gives the median number as 28 generations.
So you cut the time back to the common ancestor about in half with the HVR2 test matches as compared to HVR1 matches.

18 Dec 2002 :: 14 Nov 2008
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