There is something amiss with the sound on my PC due to other users messing about with speakers I think, so I am unable to listen to any of the lectures nor could I hear the YouTube video posted by STG.
I did watch some of it with subtitles but they spoiled my viewing pleasure.
I just wanted to let you know, in case you weren't aware, that Debbie Kennett is a member of rootschat and author of several books on DNA I believe. She's really helpful and has a knack of being able to explain this complex subject in a way that even I can understand (I think

).