There really is no reason why they don't get pregneant.
usually a week
Yes it is quite possible for alien abduction pregnancies to happen even with male sims! This can happen by looking through a telescope at night but the more chance of it happening is to have the cheat mode on and select to 'Be abducted'.
The alien sim can't get pregant. But it can make human sims pregant, even boys, or children! But sorry an alien sim can not get pregant!
no, impossible and impossible only on computer
no
Most of the time (especially with male Sims) they do get pregnant. And when they do it is instant.
They are both the same really they both take about 2-3 days. If you have Sims 2 you can speed up her pregnancy. Mine was in the first stage (small bump) and she had the baby a few "sim minutes" later. I'm not sure if The Sims 3 has a pregnancy speed up or not. Hope I helped!
They are 3-4 sim days long.
the pity is you can't have a baby on the sims 2 ps2 and, there are no cheats :( how come you can hav a baby alien then?
you can't have a human baby but the way you can have an alien baby is by looking out a telescope at like 7 at night they will obduct you and get you pregnant ( even male sims can get pregnant when obducted )
yes you can, although i am not 100% sure how yet, i know that if a man gets abducted by an alien they get pregnant. If you want the aliens they are in the sims 3 season expansion pack.