Exgaywatch is reporting an email exchange with geneticist Francis Collins of Human Genome Project fame. In it, Dr. Collins reacts to a NARTH article describing his views of on causes of homosexuality. You should read both the article on the NARTH website by Dr. Dean Byrd and then the response by Dr. Collins to get the context. I am going to reproduce Dr. Collins email to David Roberts at EGW:
It troubles me greatly to learn that anything I have written would cause anguish for you or others who are seeking answers to the basis of homosexuality. The words quoted by NARTH all come from the Appendix to my book â€œThe Language of Godâ€ (pp. 260-263), but have been juxtaposed in a way that suggests a somewhat different conclusion that I intended. I would urge anyone who is concerned about the meaning to refer back to the original text.
The evidence we have at present strongly supports the proposition that there are hereditary factors in male homosexuality â€” the observation that an identical twin of a male homosexual has approximately a 20% likelihood of also being gay points to this conclusion, since that is 10 times the population incidence. But the fact that the answer is not 100% also suggests that other factors besides DNA must be involved. That certainly doesnâ€™t imply, however, that those other undefined factors are inherently alterable.
Your note indicated that your real interest is in the truth. And this is about all that we really know. No one has yet identified an actual gene that contributes to the hereditary component (the reports about a gene on the X chromosome from the 1990s have not held up), but it is likely that such genes will be found in the next few years.
This is a very clear picture of the current research that I agree with. This is what should be presented by all concerned when describing the research to clients, activist audiences, in churches and in the media.