I'm not too sure, but didn't god create eden, and Adam, and enjoin Adam not to eat from tree of good and evil.. and then, after that, he created Eve from Adams rib?-- and likewise, God gave Adam (but not Eve) instructions to be fruitfull and multiply.. (but not Eve)

so, when Eve ate from the tree of good and evil, it was not really sinfull, because she had never been told not to by god, only by Adam. likewise, among orthodox religious jews,(and many christian sects) it is wrong for men to use condoms, or any sort of birht control, but not for women...
(but since the story of the creation is told in two places in genisis, and each one is slightly different, there is some ambiguety.)-- and if Eve got tossed, there still would have been Lilith..