What Your Maternal Haplogroup Means about You
MtDNA haplogroups are timestamps of when your mitochondria adapted to a specific environment.
They are only passed on through the maternal line.
So if you take a genetic test and reveal your maternal haplogroup, you will know which haplogroup your mother and your grandmother and her grandmother and so on had - up to that woman whose mitochondria got adapted to the new environment some 15-30k years ago.
Your haplogroup helps gain unique insights into what kind of environment your mitochondria are optimized for!
Cool, huh?