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大量的观察表明,不仅人的身材、皮肤、发色、相貌可以遗传,某些味觉、嗅觉的特点都会从祖先遗传继承下来,甚至人的智力、个性和某些特殊技能也能遗传。有人使同卵双生儿分在两个家庭教养,而让异卵双生儿处在同一个家庭教养,结果发现,两对人的智力,前者比后者更为相似,说明智力的高低主要受遗传的影响,尤其像语言能力、数学能力等智力行为,特别依赖遗传素质,其影响的程度,高达百分之七十到
A large number of observations show that not only people’s body, skin, hair color, appearance can be inherited, some taste, smell characteristics inherit from ancestral inheritance, and even human intelligence, personality and some special skills can be inherited. Some people make identical twins in two families upbringing, leaving fraternal twins at the same family upbringing, and found that two pairs of human intelligence, the former is more similar than the latter, indicating that the level of intelligence is mainly affected by the genetic In particular, intellectual activities such as language skills and math skills are particularly dependent on genetic predispositions, and the extent of their influence is as high as 70%