Given that procreation requires one man and one woman to participate, it's going to be really hard to practice eugenics based on genetic differences between the sexes.
Sex-selective abortion is not eugenics. Nobody with even the most cursory understanding of human reproduction thinks that you'll permanently alter the gene pool by selecting one sex over another. This is totally unrelated, and I'm rather sad that I managed to get not one but two replies bringing it up, as if it were somehow relevant. The quality of this discussion is just astonishingly bad.
Beside selective abortion and embryo selection, it's already possible to derive gametes of both kinds from stem cells of arbitrary sex in mice, and it will most likely be possible to do the same with human cells soon.
Mice that descend from two males or two females have already been created in the lab.
You still need wombs, but they can be grafted and will probably be farmed from stem cells in the future too.
