Boy, am I glad NOTHING from D/P is anything like this situation I've gotten myself into.
I trade my Volbeat and Illumise from Emerald to LeafGreen and breed 'em with a Ditto, hoping to have a Volbeat and Illumise of that game's very own. Easy, no? WRONG! Apparently Volbeat and Illumise are programmed like Nidoran M/F, so that breeding of either one can result in the other. In this case, I got two Volbeats. Now I already had this headache in Emerald, with getting a bunch of Nidoran Ms before finally getting an F to hatch, so I figure I'll get an Illumise in time.......ten Volbeats later I'm cursing out my Ditto for using the wrong chromosomes. *sweatdrops*
Please tell me the law of averages will finally catch up with me and I'll get that Illumise. Also I'm glad nothing else in D/P has such a weird breeding problem as Volbeat/Illumise and Nidoran. The weird evolution methods are fun enough to deal with. Of course, you can catch just about everything in D/P alone with the right stuff, so that's moot...