[quote name='Deepwater6' timestamp='1366814213' post='327630']
Hey Turtle, Great to hear from you again. Your right the article didn't really get into climate change, that was just me typing out loud as to a reason for the switch.
Are you saying it was a totally different group with these markers? I kind of got (from the article) that it was a group who's numbers went low and then they were inter-breeded with another (new) smaller group. That mixture then created the new markers.
I have been talking to you all along; were you gone?
Yes; I get that the markers are from totally different groups. That's why they are markers.
[quotename='BBC article']... Decades of study of the DNA patterns of modern Europeans suggests two major events in prehistory significantly affected the continent's genetic landscape: its initial peopling by hunter-gatherers in Palaeolithic times (35,000 years ago) and a wave of migration by Near Eastern farmers some 6,000 years ago. (in the early Neolithic).
In the study, an international team of researchers focused on mitochondrial
DNA (mtDNA), the information in the cell's "batteries". This type of DNA is
passed down, almost unchanged, from a mother to her children.By studying the mutations, or changes, in mtDNA sequences, researchers are able to probe the maternal histories of different human populations. It has enabled them to build a "family tree" of maternal ancestry, and group different mtDNA lineages together based on shared mutations.