中文摘要：

同性情感的发育起源和遗传机制,以及发展的自然性和社会性,是美国联邦政府公布法案对同性情感实施法律保护的重要证据,同性婚姻合法化成为人类婚姻认知理念的历史性进步。本文探讨同性情感的社会学和生物科学史的自然性,阐述生物学进展在该历史进程中起到的重要作用：第一,同性情感社会认同的发展过程是一个漫长的社会历史过程,探讨该历程的特性对认清历史的过程和现实的合理性具有重要意义;第二,在动物界同性趋向与环境密切相关,对人类同性情感行为学中性别趋向是否有类似机理存在,可能有一定借鉴价值;第三,2016年发现性别起源的古菌嵌入学说也为性别的产生提供了崭新的研究途径,为认识同性情感的起源和社会现实提供了更加令人信服的自然性证据;第四,染色体性别决定学说相关的Xq28同性恋基因可能是生物性别决定的重要因子,经典生物学与现代生物学的有机结合使我们对同性情感的生物学基础有了更进一步的认识。

英文摘要：

Advances in biological research reveals molecular mechanisms of homosexual feeling within development and genetic of human being.These studies have become solid supports of legal protection for same-sex marriage legalization announced by the federal government of the United States to implement the bill. It is a dramatic step forwarding human cognitive concept of marriage. Here, this article discusses the following aspects of same-sex emotion in sociology and in natural history of biology and explicate the important role in biomedical and molecular biology. The first, developing history of the same-sex emotion has acknowledged bysociety universally. The second, the homosexual tendency in animal is well recognized and closely related to the environment, in which is found to be similar to the mechanism of the gender tendency of human somehow. The third, an important discovery that the origin of Archaea embed gender theory also provides an important possibility for first-sex determination of ancient history in 2016. The fourth, chromosome theory of sex determination claimed that Xq28 gay gene is an important factor related to biological sex determination in human.