The laboratory analysis compared the mitochondrial DNA sequences of each volunteer to the sequence recovered from Kwäday Dän Ts’ìnchi.

The comparison looked for matches or near-matches — sequences that were identical to or closely similar to the ancient sequence, indicating that the volunteer and the ancient individual shared a common maternal ancestor somewhere in the ancestry chains linking them both to that ancestral woman.

Seventeen people had mitochondrial sequences that matched Kwäday Dän Ts’ìnchi’s closely enough to indicate shared maternal ancestry.

What Seventeen Relatives Means — And What It Does Not