I have a sim who was the product of an alien abduction and I would like to know whether he, himself, can be abducted by aliens and come back pregnant.

I had him abducted and he came back, but it's been a couple of days in-game with no sign of pregnancy.

EDIT: He was NOT pregnant, so I'll take that as a no on the alien incest. That being said, I made him pregnant via Tombstone of L&D. Hope that doesn't hurt my game...

No because that would be his grandfather getting him pregnant.... O_O L&D shouldn't hurt so long as you didn't teleport the Pollinator to your lot.

I get what you mean, but I figured there would likely be no check for that. I'd actually prefer if there was no check, since I figure "Pollination Technician" should be very much like "Ideal Plantsim," since there would likely be more than just one alien responsible for reproducing. That's why I used the Tombstone of L&D.

There's only one Pollination Technician NPC, so no matter what your interpretation of it, the game recognizes him as the father of all abduction children and they consider each other siblings. A Multi PT hack should work around that, as long as the PT picked for the second abduction is not the same as the father.