But that aside- if a person is legally allowed to change their gender from a "plumbing" standpoint, and have a heterosexual marriage- that transgender person is still the same sex that they were before..
How do you determine sex, if not by anatomy?
If a man turned into a woman, to be able to marry another man- it wont matter that he has a vagina all of a sudden- he still has a Y chromosome and is marrying a man who also has a Y chromosome..
What about women who have a Y chromosome and don't know it?
I saw that House episode, too- where the girl was immune to testosterone, and was found to be genetically a male, with undecended testicles. I am not an MD, and looking that condition up on the internet brought nothing up besides that House episode and some discussion board messages, so I can only say this: If someone had such a thing, then they are still technically a male, lol..
I am only speaking about genetics here- the birth certificate is what most registrars use to approve marriage licenses. The birth certificates of people who are hermaphrodites are often wrong, and even females that have an unusually large clitoris (as a result of a birth defect, or genetic disposition, etc) because the male organs have not descended yet, or the penis is too small to be "obvious".
In the past, blood testing was not always even available for gender.. and may not have been widely utilized..
Oh and for the person who asked about the adam's apple- there is a surgery that transsexuals can get to make their adam's apples smaller, or hidden, although I do not know what is this surgery entails. (Google "adam's apple" "plastic surgery" if you don't believe me) They offer this so that people who have large adam's apples can look more feminine.. The female neck is a very sensual and attractive part of a woman's body, to men, primarily because it does not have that adam's apple..
My whole point to all this is that since someone can get a gender change, and change their gender legally, then it should really be noted by the homophobes that anyone willing to go that far to marry someone they love can LEGALLY do it.
I just dont agree that a person should have to be subjected to undergoing gender alteration surgery, as well as all the damned testosterone or estrogen treatments, just to friggin marry someone they love! I think that is just AWFUL that some people have to either live in misery or do that, to be able to have a wedding and a contract.