Seriously? That is the best you can do.
Here is some real science for you, monozygotic twins have identical genes. This means that, if homosexuality were genetic, monozygotic twins would always have the same sexual preference. They don't. There is a correlation, but correlation is not causation. If it were I could prove almost anything, including the fact that spending on science causes suicides.
http://williamapercy.com/wiki/images/Homosexuality_in_Monozygotic_Twins.pdf
Do Studies Conducted on Homosexuality in Twins Show a Genetic Basis of Sexual Orientation? - Born Gay - ProCon.org
As for DNA markers, that study has been debunked so many times it is laughable that anyone still uses it. Not to mention that every single marker cited actually appears in straight people also.
A 'gay Gene?' - Is Homosexuality Inherited? | Assault On Gay America | FRONTLINE | PBS
But, please, keep pretending that is science.
You article about female relatives of gay men being more fecund is pretty sexist, if you ask me. How do you explain the occurrence of lesbians among relatives of gay men, or does that just never happen? In other words, it is pure speculation in an attempt to explain being gay assuming that Darwinian evolution would eventually eliminate the trait, a theory that is completely irrelevant if sexual preference is an actual choice, which is evident by the fact that gay men actually marry women, and have children with them. End of need to explain the impossible.
Here is a hint for you, when a science article says may in the title, it means they really have no idea what causes it, or when, but they want to try to support a pet theory. In other words, it isn't actually science, it is speculation. I do like one quote from that link though.
But many genetic screens have failed to turn up genes that are responsible for sexual orientation.
That is exactly what I have been saying, isn't it?
The response to pheromones is interesting, but hardly counts as proof that sexual preference is not a choice. People can learn to like smells, and memories are keyed to odor. All it proves is that, in some way, these people learn to recognize an odor and react to it.
So, you posted a bunch of junk, called it science, and now have egg all over your face. I, on the other hand, posted a single link to prove that homosexuality is not genetic. If you want to see the rest of my science showing hat sexual preference is a choice feel free to dig up one of my previous threads on the issue.