Gay Gene

The so-called "Gay Gene" is a reference to a hypothetical gene or genetic sequence that influences sexuality in a person. The existance of such a gene is the topic of wide debate, on both sides of the argument.

Human Genome Project
Anti-Equality activists will attempt to use the fact that no specific gene that directly controls sexuality has been found, therefore homosexuality is not genetic and therefore must be a learned behaviour. Often, they will cite the fact that the Human Genome Project (which sucessfully mapped the entire human genome) did not find a "gay gene" therefore none could exist.

This argument lacks credibility and demonstrates a lack of understanding of the goals of the Human Genome Progect. A great explanation of the junk scientific explanation that sites such as 'True Origin' offer can be found at the "Waking Up Now" blog:

"'Mapping the genome just means they’ve figured out its chemical structure. They still haven’t broken it down into all the individual genes yet. They’re not even sure how many human genes there are. I mean, they didn’t find the gene for near-sightedness until 2010, seven years after the genome project was complete. Who knows what else they’ll find next?'"

Causes of Homosexuality Main Article: "Causes of Homosexuality"

The causes of homosexuality are widely disputed among activists on both sides of the debate, particularly with regards to weather or not homosexuality is a choice. The idea that there is a single gene that dictates homosexuality in a person is a flawed idea, and the nonexistance of such a gene does not necessarily mean that there is not a genetic element to the causes of homosexuality. In reality, it is likely that there are a number of factors which contribute to a persons sexuality - genetic or otherwise.