In general, I'm led to believe that sixuality and gender norms in TES is very fluid.
In Skyrim there seems to be open acceptance of homosixuality and what one might consider (and I hate using this sort of terminology) "standard" gender roles do not particularly apply. A great warrior is a great warrior by merit of their skill and the title of Jarl can be inherited by anyone. Gormlaith Golden-Hilt is one of the heroes who banished Alduin in the past and enjoys the afterlife in Sovngarde. Morrowind held a pantheon that contained both a hermaphrodite poet who basically has six with everything and remarkably skilled warrior god-queen who is the strongest member, martially, of the Tribunal.
But even looking at the influence of religion (for instance, the prevalence of Azura in both Morrowind and Elsweyr worship), I have something of an incomplete picture of gender roles throughout Tamriel. Of interest is the Summerset Isle and Aldmeri attitudes as well as Hammerfell but I'm curious about all of Tamriel. Likewise, attitudes towards sixuality.
This is a subject somewhat in the background of the series. From what I can tell, no major culture has any negative biases when it comes to either subject but I know that could vary from province to province. For instance, and perhaps this is just due to portrayal, I've always assumed that Cyrodil is a more conservative place. But I know I could be wrong. As someone with a vested interest in the portrayal of these things throughout pop culture, I'd love to know more.