Of course it can, Shane. The way to think of this is to go back before the "Eve" and ask how those lines disappeared. Every time a new human is created, it'll have the mitochondrial DNA of its mother's mother and that of its father's mother isn't passed on. Every role of the dice loses 50%. So, over time, the probability of having "lines" disappear are much higher than surviving.
This is specially so when you have a small population. And human populations have always been extremely small until quite recently in the grand scheme of things. So in the thousands of years before the mitochondrial "Eve," those lines fall victim to the statistics. Hers survives...well, because somebody's has to... Otherwise, we'd have never had email... ML ________________________________________________ YOU MUST clip all extraneous text when replying to a message. Send list submissions to: Marxism@lists.econ.utah.edu Set your options at: http://lists.econ.utah.edu/mailman/options/marxism/archive%40mail-archive.com
