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you sheng yu zhi ye wei hai
Author(s): 
Pages: 38
Year: Issue:  1
Journal: Occupational Health and Emergency Rescue

Abstract: <正> 优生是研究影响后代的各种因素,预防和发现先天性异常,阻断遗传疾病的延续,从体力智力各方面改进人类的遗传素质,从而提高人口的质量。优生学的任务:一是研究如何减少生育各种遗传病的患儿,二是研究如何生育健康聪明的婴儿。人们在工作中接触各种化学、物理、生物的职业危害,均对生殖功能产生不同程度的影响,改变生殖细胞的遗传信息、染色体DNA碱基对的排列顺序,发生基因突变或
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