告诉你的健康顾问，你的家庭病史，遗传缺陷，生育不足。
Talk to you health care provider about your family history, genetics and birth defects.
这就是遗传性缺陷。
基本遗传物质dna的缺陷造成癌症发生。
Canceris caused by defects in DNA, the basic genetic material.
结论遗传性智力迟缓是由DNA损伤引起的人类表型缺陷；
Conclusion:The genetic mental retardation is the human phenotype blemish caused by injured DNA.
基本遗传算法存在着收敛速度慢、易陷入局部最优等缺陷。
Simple genetic algorithms get local optimal solution too easily and converge slowly.
唐氏综合症是最常见的引发智力缺陷的遗传因素。
Down syndrome is the most common genetic cause of mental retardation.
唐氏综合症是最常见的引发智力缺陷的遗传因素。
Down syndrome is the most common genetic cause of mental retardation.
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