The big question from Star Wars the Force Awakens is the identity of Rey’s parents. It seems that the only available character in the story with a womb is Leia Organa.
Asexual reproduction seems to be the norm in the Star Wars Universe. On our universe, male and female mammals get together and, using a process called sex, recombine their genetics to produce offspring who are genetically distinct their parents. The female carries the developing fetus during gestation. With other animals, such as among seahorses, the male carries the developing fetus during gestation. Still other species reproduce without recombining DNA at all. This type of reproduction is called parthenogenesis. When it’s done artificially it’s called cloning.
Anakin was produced by parthenogenesis. The midi-chlorians caused his one parent to reproduce asexually. Within the Star Wars universe, cloning is used as a means of procreation. Given the low number of married couples in Star Wars, it appears that asexual procreation may be the norm.
Luke, Leah, and Kylo Ren appear to be the only individuals in the Star Wars Universe produced through sexual reproduction. That Luke and Leah’s mother died during childbirth suggests the Star Wars medical community has little experience with obstetrics. A lack of knowledge of child birth is consistent with asexual reproduction as the norm. In the past I’ve attributed the weird handling of procreation to squeamishness on the part of George Lucus. He’s has been willing to portray prostitution, slavery, torture, mass death, and patricide. For some strange, possibly puritanical, reason he can’t deal with sexual procreation?
Maybe he can. If only one parent is essential to reproduction, Luke might be Rey’s one parent. His lack of a womb isn’t a problem. The midi-chlorians caused Shmi Skywalker to become pregnant without a father. Surely they can implant a developing fetus in Luke’s abdominal cavity with or without a womb.
Such a birth would be consistent with Greek mythology. Zeus gave birth to Athena through his head. He gestated Ares in his thigh. It’s also consistent with the Wizard of OZ series by Frank Baum. The look of Star Wars has owes considerable debt to the John R. Neill’s illustrations in this series. BB-8 for example resembles Tik-Toc, a clockwork man. C3-PO looks a lot like the Tin Man. The costumes and hairstyles of Leah and Padme resemble drawing of Ozma, a transgender character. As a child, Ozma was a boy named Tip. When she left her foster mother, she discovered that she was actually a girl who’d been enchanted.
If The OZ series is taken as a model, then Luke could be female. He and Leah might be identical twins. Through the mechanism of the force, Luke developed as a male. Some people use the word “female” to refer to those with wombs, others use it for those view themselves as female. If Luke considers himself male or female is irrelevant to how he reproduces. He might still have a womb. In a universe where a deaths star can be thrown together in a few years, surely a man can get pregnant.
I doubt the producers will go with such a twist. Giving the politics of gestation, gender, and sexuality, a male character giving birth would surely be highly controversial. But why not?