It was explained to me the the mother's mtdna only passed down to her son---on the male line but went from her to her daughter and then to her daughter's daughter and so on down the female line. A male's DNA passes down from son to son--down the male line---and again only to his own daughter. Are you saying this is not correct---that I was informed about this---and it is not right? I wish to know the actual truth of how and to whom DNA and mtdna is passed down from generation to generation. Thanks for explaining this to me.