What about me? The last time you asked me to provide scientific evidence, I posted the following on another thread. But you never said a word in response. So perhaps now would be a good time:

These are just a few abstracts from recent scholarly articles. The authors and date of publications precede each abstract. If anyone would like to receive a full reference to these articles, please message me, and I will send them to you.

Santtila, Sandnabba, Harlaar, Varjonen, Alanko & Von der Pahlen /2008:
We investigated the potential to engage in homosexual behavior in 6001 female and 3152 male twins and their siblings, finding that 32.8% of the men and 65.4% of the women reported such potential (p <0.001). 91.5% of these men and 98.3% of these women reported no overt homosexual behavior during the preceding 12 months. The potential to engage in homosexual behavior was influenced by genetic effects for both men (37.4%) and women (46.4%) and these overlapped only partly with those for overt homosexual behavior.

Schwartz /2008:
The author examines the complex relationship between homosexuality and biology. As scientists learn more about the human body there is a perception that parents could determine whether their child is gay before it is born. The author asserts that if there is a gene that makes one gay, then it cannot be deterministic in the way that eye color is. The human genome contains about 30,000 genes, which suggests that a majority of the differential development in individuals results from combinations of genes and interactions between gene expression and environmental factors.

Ellis, Ficek, Burke & Das /2008:
The present study sought statistical differences between heterosexuals and homosexuals for four traits that are known to be genetically determined: eye color, natural hair color, blood type, and the Rhesus factor. Using a sample of over 7,000 U.S. and Canadian college students, we found no significant differences between heterosexuals and homosexuals regarding eye color or hair color. In the case of blood type and the Rh factor, however, interesting patterns emerged. Heterosexual males and females exhibited statistically identical frequencies of the A blood type, while gay men exhibited a relatively low incidence and lesbians had a relatively high incidence ( p < .05). In the case of the Rh factor, unusually high proportions of homosexuals of both sexes were Rh− when compared to heterosexuals ( p < .06). The findings suggest that a connection may exist between sexual orientation and genes both on chromosome 9 (where blood type is determined) and on chromosome 1 (where the Rh factor is regulated).

Let me know what you think.