Here is the quotes from Lucas on said subject and Ed's point about Christ is addressed as well
:Anakin has no father. Do Christ overtones-
Oh, it's not just Christ. Christ is one of a long, long line of heroes who don't have fathers. There's a long tradition of mythological heroes.Can you name a few others?
There are a lot of Greek gods who came down [and impregnated mortal women], and so the heroes don't have fathers. Whether its Hindu, Chinese or Middle Eastern, all the mythological heroes didn't have fathers. The fathers were the gods.
Now in this particular case, the gods happen to be a life form that allows cells to divide. So it's a metaphorL that which brings life. I don't want to get too controversial about this - some people believe it happened in other ways, over seven days, but if you listen to biology, there's another theory, which begins with an e. If you study microbiology, you will come to the realization that this alien life-form, which has completely different DNA, helped create life on earth and within the galaxy. But every cell has one of these life-forms in it. It's a simplified version of relationships - that symbiotic being goes through everything. That's why Han Solo joins the Rebellion, that's why Luke saves his Father. In Star Wars land, all these relationships are necessary to bring forth a greater good - and evil.
Now, there's a hint in the movie that there was a Sith Lord who had the power to create life. But it's left unsaid: Is Anakina product of a Super-Sith who influenced the midichlorians to create him, or is he simply created by the midichlorians to bring forth a prophecy, or was he created by the Force through the midichlorians? It's left up to the audience to decide. How he was born ultimately has no relationship to how he dies, because in the end, the prophecy is true: Balance comes back to the Force.