FTDNA has updated the Big Y test: all tests in progress, and all future orders, will be called Big Y-700. The 700 means that more than 700 STR markers will be reported. More importantly, they will use new laboratory methods and sequence new areas of the Y chromosome, and we can expect more novel variants/SNPs to be reported.
The first five Big Y-700 results were completed this week in the I-P37 project and an additional 40 tests are in progress.
This updated I-CTS10228 tree shows two new branches:
- the I-BY153008 branch is based on two Big Y-500 results. It's part of I-Z17855. One of the Big Y results is for a man with paternal ancestry from Serbia, and the other man's ancestry is unknown
- the I-BY99606 branch is based on one Big Y-500 result and one Big Y-700 result. It's also part of I-Z17855. FTDNA hasn't named this branch yet, there are approximately three equivalent SNPs and we don't know which name FTDNA will chose. One man has paternal ancestry from Serbia and the other man has paternal ancestry from Macedonia. The Big Y-700 result discovered 10 novel variants that weren't reported in the other man's Big Y-500 result. But probably he is also derived (positive) for most of these 10 variants, and they weren't reported because the Big Y-500 didn't sequence these parts of the Y chromosome.
Click here for a brief description of the I-CTS10228 haplogroup
Click here to find our previous I-CTS10228 tree
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