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人类遗传学是优生学的主要理论基础,同时遗传病的检出诊断和防治又是实现优生必不可少的步骤和手段。1960年Steon对优生学又做了进一步阐述,由演进性优生学两部分组成。明确提出前者的目的是促进人群中有利表型的等位基因频率增加或至少不使其频率减少;后者目的在于减少消除人群中产生不利表型的等位基因频率,从整体上看二者的目的是一致的即致力于改善人群的遗传素质,这种倾向就是优生。1979年巴杰马特又提出“新优生学”其内容包括遗传咨询,产前诊断和选择性流产。
Human genetics is the main theoretical basis of eugenics, while genetic disease detection and prevention and control is an essential step to achieve eugenics and means. Steon on the eugenics in 1960 further elaborated by the evolution of eugenics in two parts. It is explicitly stated that the former aims to increase or at least not reduce the frequency of the allele having a favorable phenotype in the population; the latter aims to reduce allele frequencies of eliminating adverse phenotypes in the population, and both The purpose is consistent that is committed to improving the genetic quality of the population, this tendency is eugenics. In 1979 Bajmamat also proposed “new eugenics” which includes genetic counseling, prenatal diagnosis and selective abortion.