Tuesday, February 28, 2017

23andMe, or how to succeed

If your main interest is in genealogy, it is worthwhile now to test with 23andMe. (I know, I know, I too gave up on them more than once.)

Now that most of their users have been converted to the "new experience," it is significant that they have also upgraded some of their tools for matching, chromosome mapping and even for triangulating matches. They've also introduced a new pricing model so that one can order just the Ancestry testing for the standard price of $99. Like the other two of the Big Three companies, they occasionally have a sale that brings the price down to $79.

So, once again, the formula for success with genetic genealogy is:

1. Males should have a Y-DNA test at Family Tree DNA. (Join an apporopriate surname project first, if possible.)

2. Males and females should have an autosomal test at all three major companies: Ancestry, 23andMe and FTDNA (Family Finder). If you test with one or both of the first two, you can transfer the raw data to FTDNA's Family Finder for free (or for $19 to get full access).

3. Upload your family tree (names, dates and places) to all three testing companies and to Gedmatch and make it publicly available.  Be sure to include your tested relatives in your tree, use the FTDNA "phasing" feature, and link tested relatives at Gedmatch. Note that your tree for 23andMe will actually be at MyHeritage.com.

4. Communicate with your matches. Try to find common lines and, eventually, common ancestors.

5. Test your oldest relatives first. You may not have a chance to later, and their DNA is less diluted than yours.

6. If you are interested in your mother's deep ancestry, have an mtDNA test at FTDNA. This is less useful for genealogy than the Y or autosomal test, but it can be helpful in certain situations.

7. Take advantage of all the tools available to analyze DNA matches and expand/validate your tree.

No comments: