Suppose we take two human children - a boy and a girl. We separate them from their parents at age 1 and we isolate them from society. A professional caretaker visits them a few times a day, giving them food and helping them with their necessities. They are taught to communicate in one manner or another, perhaps given access to some form of entertainment.
Now, I'm going to be brutal - for science: the hypothetical boy has been sterilized. He doesn't know it, of course.
At no point do the children learn how humans are born. Nothing in their surroundings is an indication, and the caretaker never tells them.
Also, they never learn that it is "normal" for regular people to have children of their own.
As far as the kids are concerned, no other humans except them and the caretaker exist.
Do you think that:
1) Those children will experience an innate need to have children of their own?
2) What activities will the children undertake to satisfy that need?
Thanks