rationalskepticism.org

Keep It Real wrote:

Thomas Eshuis wrote:

Keep It Real wrote:

Thomas Eshuis wrote:
They don't.The jury is still out on that.

There's only something like a 20% concordance for monozygotic twins and homosexuality. The jury is not out.

First, that's only one possible way how genetics can influence homosexuality.
Two, to quote your own words back at you.

I'm yet to see any evidence to support either of the above statements. Post some please?

Keep It Real wrote:

In 2000 Bailey, Dunne and Martin studied a larger sample of 4,901 Australian twins but reported less than half the level of concordance.[5] They found 20% concordance in the male identical or MZ twins and 24% concordance for the female identical or MZ twins. Self reported zygosity, sexual attraction, fantasy and behaviours were assessed by questionnaire and zygosity was serologically checked when in doubt.

https://en.wikipedia.org/wiki/Biology_and_sexual_orientation

http://psycnet.apa.org/journals/psp/78/3/524/ - Abstract.