This explains a lot

I married a man of mostly Latin background, and carried his 2 male children, during and after the pregnancies, my taste for Mexican and spicy food totally changed - I used to never really have a thing for it at all - I began to crave it and like it in a totally different way - I could literally "tell" that part of me had been transformed by carrying that child and that other DNA - so bizarre!

And even more interesting, is the Bible verse that says two become one - that you are joined physically with the person you have sexual relations with - I think that is deeper than just they connection of a penis to a vagina - it is an actual melding of DNA! It is described as a piece of that person going with you - and it is frowned upon to spread yourself too thin around town - the reasons are even more obvious why now that we have this scientific information.

Thanks, OP!