Perhaps the mingling of the DNA and the intertwining of lineages was planned as a way to make singling out the carriers before the appointed time difficult? Like a safety precaution taken to ensure the survivability of at least a few of the original genetic sequences.
Hello GuiltybyDesign
In thinking about this a little more I think you may be exactly right.
Historically we were once living in a matrilineal, matriarchal society and with god we evolved into a patriarchal society with only the lineage of the male given in the bible even though Israelites were not considered Jews unless their mother was a Jew, yet, they do not give the female lineage.



