mtDNA revisited - Haplogroup U5a1a

My daughter and I watched  The Human Family Tree, a National Geographic special about the Genographic project. She is very interested in the idea that all of us are from Africa.
Log on to the Genographic project 
Here are some links about the U5a1a haplogroup.

http://freepages.genealogy.rootsweb.ancestry.com/~staples/mat_research.htm


http://www.familytreedna.com/public/CossackDNA/default.aspx?
"U5a1a: Mediterranean Origin. The mitochondrial super-haplogroup U encompasses haplogroups U1-U7 and haplogroup K. Haplogroup U5, with its own multiple lineages nested within, is the oldest European-specific haplogroup, and its origin dates to approximately 50,000 years ago. Most likely arising in the Near East, and spreading into Europe in a very early expansion, the presence of haplogroup U5 in Europe pre-dates the expansion of agriculture in Europe. Haplogroup U5a1a—a lineage within haplogroup U5—arose in Europe less than 20,000 years ago, and is mainly found in northwest and north-central Europe. The modern distribution of haplogroup U5a1a suggests that individuals bearing this haplogroup were part of the populations that had tracked the retreat of ice sheets from Europe. 11% of modern day Europeans share this origin. "


http://www.brian-hamman.com/DoYouBelongToTheU5mtDNAHaplogroup.htm
Interesting visual showing the mutations that led to U5a1a


www.familytreedna.com/public/U5a1a1-FGS/
Headed by Emily Doolin Aulicino. As a group they are trying to slowly identify the common ancestor.

"The U5a1a1-FGS DNA Project is an ongoing project open to any female or male who has taken the full mitochondrial DNA test and is a U5a1a1. To qualify as a U5a1a1 you must have the following mutations in your full genome sequence:
05495C, 15924G Testing only the HVR1 and/or the HVR2 does not give you results for the two markers above. Only the full genome sequence does. Our primary objective is to try to identify and tie together the numerous female lines to assist in proving our relationships. You will be asked to complete a JOIN form and submit your all female lineage with spouses, dates and locations up to 1900. Current participants' results can be viewed on our website. Please contact the administrators for further information."

 General information about haplogroups
http://www.answers.com/topic/human-mitochondrial-dna-haplogroup