As a genealogy researcher and genetics newbie with questions, I wonder if as a society, children should inherit the mother's last name, and surname projects should be based on those names.

My reasoning is that mtDNA is passed from mother to child ending when the male child marries or there is no female offspring. The use of YDNA is ONLY useful for tracking the male line. If surnames were from the mother, they would continue upward to infinity for both male and female.

Please forgive me if this observation has already been made, but I was unable to find it. And it may very well be naive, but please attribute that to my basic education in this field. As always comments are welcome and will most definitely enrich my understanding.