同性恋基因真的存在吗

 shangxinshiji90shidaiyingguoyichuanxuejiadien·hamochucimingquetichu tongxinglianjiyin jichulilunzaochengquanshijieguanxin，yihouyouyouzheixiangkexueyanjiushuomingtongxinglianjiyindequecunyoubingyoumamajiyinyichuan，yincitongxinglianjiyinqueshishicunyoudema?

同性恋 遗传基因是不是确实存有?

 shangxinshiji90shidaiyingguoyichuanxuejiadien·hamo(dean hamer)chucimingquetichubingzaochengquanshijieguanxinde“tongxinglianjiyin”jichulilun，jinqibeizheixiangxinkexueyanjiuqueren。meiguotongzhixinwenmeitiqueertybaodao，hamozai1993nian7yuefabudediaochabaogaozhongchengrenmenxingquxiangshouyichuanjiyinweihai，tajuedegaiyichuanjiyinzuoluoyuxxingransetishang，youmamajiyinyichuan。

 hamodekexueyanjiuwei“tongxinglianbingbushihoutianxingtiaoxuan”chushilelilunyiyi，dan20nianyilaibiedemouxiekexueyanjiucengsuanchuxiangfenqidejieguo，cushiyuzhongchenggulanjinghekongtongderenyuanduihamodekexueyanjiujiyufourenhuofengci。

 dangyue5ri，《niuyueshibao》baodaodezheixiangxinkexueyanjiufajuehamoshiduide，dequecunyou“tongxinglianjiyin”，bingqieneiyangdeyichuanjiyinyou2ge，naizhidaliang。

 renleijiyinzufangandekexueyanjiugongzuorenyuanduiduogetongxingliandixiongkaizhankexueyanjiu，canjiakexueyanjiudemeiguoxibeidaxuexuejiamaikeer·beili(michael bailey)shuo：“xingxiangyuhoutianxingtiaoxuanmeiyouguanlian。renmendekexueyanjiushuomingxingxiangjianghuishouyichuanjiyincaozong，renmenzaoyiyouzhijiezhengjunenggouzhengshi，you2zuyichuanjiyinhuiweihainanshidexingquxiang。”

 kexueyanjiugongzuorenyuantiqule409duitongxingliandixiongyijiyixinglianqinshudexueye，pouxiquedingxxingransetishangdemouyidiqudequeduixingquxiangyouweihai，yequedingle8haoxingransetishangmouxiednahuiweihainanshidexingshenghuo。

 yeyoukexueyanjiufajue，zaislitrk5heslitrk6yichuanjiyinzhoubian，tongxinglianheyixinglianzhedednacunyouchabie，slitrk6shinaobufayudeguanjianyichuanjiyin，zaibaohanxiaqiunaochuiti(hypothalamus)derendedanaodiquyouqihuoyuexing。

 jumeiridianxunbao12yue8ribaodao，shengwuxuejiafajueleyutongxinglianxiangguandeyichuanjiyin，tashimuqianweizhizuiguimoxingdexingquxiangjiyinyichuankexueyanjiu。kexueyanjiugongzuorenyuanchucikexueyanjiule1000duoweitongxingliannanshidexiangxijiyinzu(baohanzaiqizhong1rendesuoyoudnabianma)，bingjiangqiyuxiangjinzongshudeyixingliannanshiyichuanjiyintongjishujukaizhanhedui。

shujuxianshi，zaislitrk5heslitrk6yichuanjiyinzhoubian，tongxinglianheyixinglianzhedednacunyouchabie。

 slitrk6shinaobufayudeguanjianyichuanjiyin，zaibaohanxiaqiunaochuiti(hypothalamus)derendedanaodiquyouqihuoyuexing。xiaqiunaochuitizhenduizaochengcaozongxingyuwangdexiongxingheermengyouweizhongyao，eryiqiandekexueyanjiuxianshixinxi，zainantongxinglianzhezhong，qisuozhanzhanbidadao34%。

 laiyuanyuyingguoyilinuosizhoudenanangaoxiaojiankangxitongyanjiushidekexueyanjiugongzuorenyuanhaifajueletshryichuanjiyindebutongdian。tshryichuanjiyinyujiazhuangxiannangzhongyouguan，tashilingwaiyuxingquxiangxiangguandediqu。

 kexueyanjiuguanlizheailun·shandeshiboshiyanjiusheng(dr alan sanders)qiangdiao：“yinweixingshirenmenyishizhuxingdeguanjiangoucheng，buguanduibenrenhuanshishehuifazhaneryanquanshizheiban，yincilejierenmenxingquxiangdefazhanqushihebiaoshudouhenguanjian。

 cixiangkexueyanjiudemudishizhaoxunnanshixingquxiangdeyichuanjiyinjiben，jinerzuihoutishengduiyuxingquxiangfenzishengwuxuetizhidelejie。renmenzaoyijinxinglexiangguanzheiyixingzhengdejiyinzuyanjiushouxian，bingqidaishijiangengguimoxingdekexueyanjiujiangshenhuabiaomingqiyichuanjiyinfengxian。”

 cixiangkexueyanjiudecanjiazheyijuzishendexingquxianghexingganjueduixingquxiangkaizhandefen。nanshibeiguidinggenjuxueyehuotuomoyangbanchushidna，suihoukaizhanyichuanjiyindingxinghepouxi。suiranyiqiandekexueyanjiuzaoyiqiangdiaotongxingliancunyoujiyinyichuanquxiang，dantashikexueyanjiugongzuorenyuanchucikexueyanjiulegerendequanbujiyinzu，yinershiyouguanxingquxiangjiyinyichuanjibenkexueyanjiudezuiquanfangweipingding。