So here's today's fun question of Jewish law, courtesy of my Div School course on Midrash:

Technically, when a Gentile converts to Judaism, he becomes born again as a child of Abraham and Sarah, and hence loses all ties to his biological parents. The question, then: if I convert to Judaism, and my mother also converts to Judaism, can I marry my mother? Why or why not?

Hint: the solution ain't that complicated.