Mitochondrial DNA

mtDNA refers to mitochondrial DNA which is passed from mother to child. While men receive mitochondrial DNA from their mother, they do not pass it on to their children. Testing mtDNA allows for investigation into your maternal line and can help identify living relatives whose mtDNA is similar to yours, as well as ancient migration routes your maternal ancestors may have taken.
Information obtained from FamilyTreeDNA.

When humans left Africa tens of thousands of years ago, they left in small groups that migrated to different parts of the world. Over many generations, each group developed distinct mutations that allow us to identify each other. Haplogroups are these clusters of mutations, and they can tell us which migratory routes our maternal ancestors followed.

Information obtained from  FamilyTreeDNA.

The living woman : mónica: tudela-mahiques. ordered a kit with number IN131734 from FamilyTreeDNA laboratories to obtain the results of the mitochondrial DNA (Haplogroup) being the result H6a1a. H6 is one of the oldest branches of haplogroup H with an estimated age of 26,000 years.