If you've taken a DNA test to learn more about your ancestry, have you searched the Sorenson Molecular Genealogy Foundation DNA database lately?

The nonprofit Sorenson Molecular Genealogy Foundation (SMGF) just announced it’s on course to collect more than 30,000 DNA samples by the end of this year, for a total of more than 100,000 samples and corresponding genealogical records. Mitochondrial DNA (passed from mothers to their children) makes up the bulk of the additions.

The growth is partly due to SMGF’s efforts to collect DNA internationally, including in Panama, Mongolia, Thailand and Africa.

The new DNA and genealogies will pad SMGF's test results database, which contains information about more than six million ancestors from 172 countries. You can search it for free.

You also can contribute your DNA and pedigree by requesting a test kit. Note you won’t get test results—for that, you’ll need to use a commercial service. (Sorenson Genomics no longer offers commercial tests through Relative Genetics. Back in June, The Generations Network acquired Relative Genetics and its Y-Match results database.)

See SMGF’s FAQ for more details on contributing DNA, and watch upcoming Family Tree Magazines for our answers to your genetic genealogy questions.