It is my understanding that the DNA guys have concluded that all Homo sapiens originated as progeny of a single "Eve" in Central(?) Africa. Since I haven't heard anything about "Adam," I assume that the genetic tracers don't allow anything to be said about the male lineage. Be that as it may. Presumably, in order for Eve to be "Eve," she had multiple children; presumably some were male, others female. Does anyone have any idea what happened next? In order for Eve to be "Eve" the immediately logical deduction is that her children would have had to inbreed. Somehow it doesn't make sense that, if her sons had surviving children from females other than their sisters, the DNA would trace directly back to Eve. Does anyone have a handle on this?