Yes ofcourse, by all means they are the ones who carries the child around for 9 month. They have several options to use, which was mentioned by the others in this thread.
I do though believe that a child should have a father as well when it's raised if possible. But today it's more commen to get divorsed than married, or at least in Denmark it is. My parrents are divorsed, and I remember missing them both around me from time to time. I know a gay couple, and like them very much, so it has nothing to do with me not likeing gays or lesbians, but only me believeing that the best for a child would be a father- and a motherfigure.
AoD
