Is being gay genetic and, if so, do we all have a gay gene?

同性恋是遗传的吗？如果是，那我们都有同性恋基因吗？

Ultimately, a specific gay gene has not been found, but scientific evidence does suggest that human sexual orientation is strongly linked to genetics and tightly regulated at the molecular level.

最终，特定的同性恋基因没有被找到，但是科学证据显示人类的性取向与基因密切相关，并在分子水平上受到严格的控制。

Well, a recent UCLA study used epigenetics to propose that everyone has a gay gene, but it's whether or not the attachment of a methyl group to specific regions of DNA is triggered and turns it on.

加州大学洛杉矶分校(UCLA)最近的一项研究利用表观遗传学提出，每个人都有一个同性恋基因，但关键是一个甲基对DNA特定区域的连接是否被触发并激活。