People who are attracted to others of the same sex develop their orientation before they are born. This is not achoice.
人的性取向在出生前就已经确定了。一些人会被同性吸引,并不是他们人为做出的选择。
In 2014, researchers confirmed the association between same-sex orientation in men and a specific chromosomal region.
在2014年,研究人员证实了男性同性恋和特定染色体区域相关。
Existing Research
目前的研究结果
The studies from the Academy of Science South Africa have shown that homosexuality has both a heritable and an environmental component.
南非科学院的研究表明,同性恋既具受遗传影响又受环境影响。
Homosexual men have more older brothers than heterosexual men. Homosexual men are also more likely to have brothers that are also homosexual.
家庭中,同性恋男人比异性恋男人弟兄多。同性恋男人也更有可能拥有更多同性恋的兄弟。
Homosexuality is more common in identical (monozygotic) twins than in non-identical (dizygotic) twins.
在同卵双胞胎中,同性恋比异卵双胞胎更常见。
These studies prove that homosexuality can be inherited. However, the extent of the inheritance between twins was lower than expected.
这些研究证明,同性恋可以被遗传。然而,双胞胎之间的遗传程度低于预期值。 |