In one of recent episode of Fringe, We have seen that Observers not being born, just "manufactured". But it is not clarify that why there is no woman in the future, women could be also "manufactured". There must be intentinally choice causing that, and indeed that was more important subject than manifacturing, But what happened to women?? is there any good explanation?
What would be the point of having women?
All of the reproductive organs/processes would be completely useless if you aren't actually going to have babies. So if you are going to pick a gender to manufacture, one should manufacture the one with less "reproductive machinery" and that would seem to be males.