同性恋基因真的存在吗

 shangshiji90niandaimeiguoyichuanxuejiadien·hamoshoucitichu tongxinglianjiyin lilunyinqiquanqiuguanzhu，zhihouyouyouyixiangyanjiubiaomingtongxinglianjiyinqueshicunzaibingyoumuqinyichuan，suoyitongxinglianjiyinzhendeshicunzaidema?

同性恋 基因是否真的存在?

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

 hamodeyanjiuwei“tongxinglianbingfeihoutianxuanze”tigonglelilunyiju，dan20nianlaiqitayixieyanjiucengdechuxiangmaodundejieguo，shideyuzhongyushengjinghekongtongderenshiduihamodeyanjiuyuyifoudinghuochaofeng。

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

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

 yanjiurenyuanchouqule409duitongxinglianxiongdijiqiyixinglianjiashudexueye，fenxiquerenxransetishangdemougequyuqueshiduixingquxiangyouyingxiang，yequerenle8haoransetishangyixiednahuiyingxiangnanxingdexingxingwei。

 haiyouyanjiufaxian，zaislitrk5heslitrk6jiyinzhouwei，tongxinglianheyixinglianzhedednacunzaichayi，slitrk6shidanaofayudezhongyaojiyin，zaibaokuoxiaqiunao(hypothalamus)dedanaoquyuyouweihuoyue。

 jumeiridianxunbao12yue8ribaodao，kexuejiafaxianleyutongxinglianyouguandejiyin，zheishiqijinweizhiguimodexingquxiangyichuanyanjiu。yanjiurenyuanshouciyanjiule1000duomingtongxingliannanxingdewanzhengjiyinzu(baokuoqizhong1rendequanbudnadaima)，bingjiangqiyuleisishuliangdeyixingliannanxingjiyinshujujinxingbidui。

jieguoxianshi，zaislitrk5heslitrk6jiyinzhouwei，tongxinglianheyixinglianzhedednacunzaichayi。

 slitrk6shidanaofayudezhongyaojiyin，zaibaokuoxiaqiunao(hypothalamus)dedanaoquyuyouweihuoyue。xiaqiunaoduiyuchanshengkongzhixingyudeheermengzhiguanzhongyao，erzhiqiandeyanjiuxianshi，zainantongxinglianzhezhong，qisuozhanbiligaoda34%。

 laizimeiguoyilinuosizhoudebeiandaxuejiankangxitongyanjiusuodeyanjiurenyuanhaifaxianletshrjiyindebutongzhichu。tshrjiyinyujiazhuangxianxiangguan，zheishilingyigeyuxingquxiangyouguandequyu。

 yanjiulingdaozheailun·sangdesiboshi(dr alan sanders)zhichu：“youyuxingshirenleishenghuodezhongyaozuchengbufen，wulunduigerenhaishishehuilaishuodoushiruci，weicilijierenleixingquxiangdefazhanhebiaodadouhenzhongyao。

 zheixiangyanjiudemudeshixunzhaonanxingxingquxiangdejiyinjichu，congerzuizhongzengjiawomenduixingquxiangshengwuxuejizhiderenshi。womenyijingwanchengleyouguanzheigexingzhengdejiyinzuyanjiudiyibu，bingxiwanghouxugengdaguimodeyanjiujiangjinyibuchanmingqijiyingongxian。”

 zheixiangyanjiudecanyuzhegenjuzijidexingquxianghexingganjueduixingquxiangjinxingpingfen。nanxingbeiyaoqiutongguoxueyehuotuoyeyangbentigongdna，ranhoujinxingjiyindingxinghefenxi。jinguanzhiqiandeyanjiuyijingzhichutongxingliancunzaiyichuanqingxiang，danzheishiyanjiurenyuanshouciyanjiulegetidezhenggejiyinzu，yincishiguanyuxingquxiangyichuanjichuyanjiudezuiquanmianpinggu。