>How reliable is the tree in FTDNA?
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That depends on what you mean by "reliable". It is highly accurate, but incomplete. If you read point (1) on my recently posted message #8352, you'll see why.
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In short, any tree is only as good as the tests that make it up. FTDNA's tree is the most complete and is kept up-to-date, but it can only contain a portion of the whole story because we can only test a portion of the men who have ever lived. The tests themselves also only test a slightly different portion of each Y chromosome, so the tree does not represent all the mutations that exist, and a few individual mutations may not be in their exact positions if they are not covered in all of a haplogroup's tests.
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- Iain.
