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古代近亲结婚频繁,为何却没有产生明显的后果?

2017-04-24 14:34:20   今日头条

很多人受到近亲结婚危害的宣传,产生了一种误区。以为近亲结婚,其所生子女就会不健康,甚至会是畸形。其实,这是一种误解。近亲结婚的危害是近代的话题,而在古代近亲结婚是很频繁。如《红楼梦》中的贾宝玉与林黛玉、薛宝钗,就分别是姑表亲与姨表亲。

在过去,“亲上加亲”的传统很流行,姑表亲、姨表亲通婚极为流行。在西方国家的历史上,近亲结婚也是极为普遍的,各国王室间贵族互相联姻,他们之间的血缘关系都很亲近,就连发现近亲结婚危害的达尔文也是娶了他的表姐的。可是,我们发现这并没有对其子女产生明显的后果,这又是为什么呢?

而在历史上,还经历过比姑表亲、姨表亲关系还亲近的婚配阶段。许多国家的民族起源,都传说是源於一对兄妹,如我国的伏羲、女娲,日本的伊邪那岐与伊邪那美等等。看过美剧《权力的游戏》也都知道,剧中的坦格利安家族,为保持其“高贵的血脉”,长期都是近亲通婚的。这其实是有一定的依据的,人们通常误认为,混血儿的优势更大,会呈现出更多的长处。但是,世界上混血最严重的地区--拉美地区,混血人种在智力、容貌、体质上却并没有呈现出更多的长处。

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