Discussion: Is Speculative Fiction gender specific?

I’m not sure if I have the right words down for the question(s) I’m trying to ask, but I couldn’t think of any better way to ask it, so let me take a moment to explain.
I haven’t read this review of The Game of Thrones HBO show the New York Times posted and I won’t, because it will just end up making me mad, and quite honestly, I’m not in the mood to be mad. I have, however, read the myriad of angry blog responses which, in one form or another, discuss the fact that, Yes, women can (and do) enjoy fantasy/scifi, too. (If you haven’t looked yet, do a google search. The list of angry responses is quite amazing.)
That being said, I’m not going to respond one way or another to the aforementioned review, because I haven’t read it and it wouldn’t be fair for me to spout off opinions on something I’m purposefully ignorant of. What this review did do, however, is start me thinking about gender in speculative fiction. 
While I realize that speculative fiction is not a genre that everyone will enjoy, it is a genre that has quite a large and diverse following. Here are my questions that these various retaliatory blog posts have sparked within me.

  • Do you think speculative fiction appeals more to one gender than another? If so, why? 
  • Do you think gender trends in speculative fiction are starting to change (by this, I mean both characters in books and reader base)? Why/why not? 
  • There are many subgenres in speculative fiction. Do you think any of them have/are changing to appeal more to a specific gender? OR do you think one gender prefers different subgenres more than others? Does this color the perception of that/those subgenre(s) in any way? 
I sincerely hope I asked those questions in an understandable way.
I usually try to ask questions that I have an opinion for, but I really don’t with these questions. I’m not sure what I think of them, or if they are even relevant in a discussion. I am, however, interested in what my fellow speculative fiction fans think. 
So, do you think speculative fiction is gender specific?