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Haplogroups are groupings of genetic markers that imply common ancestry hundreds or thousands of years ago. They are based on a hierarchical tree and assigned letters and contain subgroups referred to as sub-clades. Haplogroups are only associated with mtDNA and Y SNP & Y-STR testing.

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How to understand differences in paternal haplogroups from different companies?

SNP tests usually provide greater depth into your Haplogroup and Y-STR tests currently are better for Genealogical History Timeframe matching with distant ancestors. … The 23andMe Haplogroup group is based on Y-SNPs (not Y-STR) and provided a little further detail with j2a1b1* = M92, M260/Page14; which is probably similar as you would receive through a National Geographic …
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4 votes
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Why doesn't the haplogroup K2b2 appear on MitoSearch.org?

I have the same issue on YSEARCH which just has the top level Haplogroup and not the more granular one, that is it doesn't define my very specific CTS Haplogroup or even a couple levels above it and I … I know the mtDNA Haplogroup tree was revised in at least 2009 and 2014, but possibly other years as well. …
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5 votes
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Why would Y-DNA matches have different paternal haplogroups?

You need SNP testing to get more granular and down the Haplogroup tree which goes quite deep. The YTree gets updated monthly on YFull based on people performing BigYs and uploading them to YFull.com. …
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