对近亲婚配及后代遗传效应的研究是人类遗传学和优生学的研究内容之一。
Research on consanguineous mating and genetic effect on generation is one of the research contents of human genetics and eugenics.
无论何时用生物学解释行为，社会达尔文主义和优生学的幽灵就会在这种背景下浮出水面。
Whenever biology meets behaviour the spectre of social Darwinism and eugenics looms menacingly in the background.
人们必须准备好面对此可能性，准备好对抗种族主义、国家主义和优生学的滥用，有些人一定会提出这些作为回应。
People must be prepared for this possibility, and ready to resist the excesses of racialism, nationalism and eugenics that some are bound to propose in response.
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