性取向真的是由基因决定的吗

 guanyutongxinglianshixiantianyoujiyinjuedingdehaishihoutianhuanjingyingxiangxingchengde，zheixieshuofayizhibeishouzhengyi，xingquxiangzhenshiyoujiyinjuedingdema?guanyuzheigelilun，huazhenxiaobianweidajiasousuoleyixieziliao：

性取向 是由基因决定的吗?

 xingquxiangshiyigefuzadewenti，gezhongxingquxiangbingwuyouliezhifen。guanyuxingquxiangdechanshengyouhenduozhonglilun，dangjindaduoshukexuejia、xintaixuejia、yixuezhuanjiarenweixingquxiangshixiantianjuedingde，wufatongguohoutiangaibian，bushiyizhongxuanze，yebushizijikeyikongzhide。zongzhi，zhongyaodeshiyingdangrenshidaoxingquxiangshiyinreneryide。

 shangshiji90niandaimeiguoyichuanxuejiadien·hamo(dean hamer)shoucitichubingyinqiquanqiuguanzhude“tongxinglianjiyin”lilun，zuijinbeiyixiangxinyanjiuzhengshi。meiguotongzhimeitiqueertybaodao，hamozai1993nian7yuefabiaodeyanjiubaogaozhongchengrenleixingquxiangshoujiyinyingxiang，tarenweigaijiyinweiyuxransetishang，youmuqinyichuan。

 hamodeyanjiuwei“tongxinglianbingfeihoutianxuanze”tigonglelilunyiju，dan20nianlaiqitayixieyanjiucengdechuxiangmaodundejieguo，shideyuzhongyushengjinghekongtongderenshiduihamodeyanjiuyuyifoudinghuochaofeng。

 benyue5ri，《huashengdunyoubao》baodaodeyixiangxinyanjiufaxianhamoshiduide，queshicunzai“tongxinglianjiyin”，erqiezheiyangdejiyinyouliangge，shenzhigengduo。

（xingquxiangzhendeyoujiyinjuedingdema？）

 renleijiyinzujihuadeyanjiurenyuanduiruogantongxinglianxiongdijinxingyanjiu，canyuyanjiudemeiguoxibeidaxuexuezhemaikeer·beili(michael bailey)shuo：“xingxiangyuhoutianxuanzemeiyourenheguanxi。womendeyanjiubiaomingxingxiangkenengshoujiyinkongzhi，womenyijingyouzhengjukeyizhengming，youliangzujiyinhuiyingxiangnanxingdexingquxiang。”

 yanjiurenyuanchouqule409duitongxinglianxiongdijiqiyixinglianjiashudexueye，fenxiquerenxransetishangdemougequyuqueshiduixingquxiangyouyingxiang，yequerenle8haoransetishangyixiednahuiyingxiangnanxingdexingxingwei。

 beilishuo：“jiyindezuoyongbuwanquanshijuedingxingde，kendinghaiyouyixiehuanjingyinsu。”helanshenjingxuezhuanjiadike·siwabu(dick f. swaab)cengzaixinshuzhongzhichu，nvxingzaihuaiyunqijiandexingweihuosuochuhuanjing，duihaizitianshengshishuangxinglianhuotongxinglianzhedejilvyouyidingyingxiang。

 faxian“tongxinglianjiyin”bingbuyiweizhefumukeyiduodiaotongxingliantaier。muqianmeiyou“tongxinglianjiyin”jiancejishu，huoxuyongyuandoubuhuiyou。beilishuo：“jinguanjianglaikenengyounanxingtaierdexingxiangjiance，danzheizhongjiancebuhuihenzhunque，yinweihenduoyinsudouhuiyingxiangjiancejieguo。”

 lundunguowangxueyuanxintaixuejiakaji·laman(qazi rhaman)gaosuyingguo《meiriyoubao》，jiyinduirenleixingquxiangdejuedingchengduyuewei40%，jianglaikenenghuifaxiangengduoyingxiangxingxiangdejiyin，zheihuidadazengjiataierxingxiangjiancedenandu。

 xingquxiang(sexual orientation)jianchengxingxiang，youchengxingqingxiang、xingzhixiang、xingweixiang、xingdingxiangdeng，tashizhiyigerenzaiqinggan、langman、yuxingshangduinanxinghuonvxingyouhezhongxingtaidenaijiuxiyin。

 xingquxiangyoufenweiyixinglian、tongxinglian、wuxinglianyijiqitaxingquxiang，xingquxiangshifouzhendeyoujiyinjueding，yijingyouleyixieyanjiuzhengming，keshihoutiandezuoyongshifouyeyoucunzai、yingxiangyouyouduoda，zheigehaixuyaojinyibudeyanjiu。