ELECTRONIC	h   t   t   p   c o l o n   s l a s h   s l a s h   w   w   w dot d u n b a r d n a dot o r g   s l a s h   d n a d u n b a r l i n e a g e dot h   t   m	http://www.dunbardna.org/dnadunbarlineage.htm	1