chromosome disorder meaning in English

染色体变异

Chromosome disorders , one of the most important genetic diseases , are the most frenquent cause of mental retardation . these disorders are thus important public health problems for no entirely satisfactory prevention measures now exist
染色体不分离所导致的疾病是最主要的遗传病之一，也是导致智力发育障碍的最主要原因，其发生给社会和家庭带来极大的负担，其中以down综合征( ds )最为常见。
As life level advancing , the environment around us has being changed . there are more and more radiative materials in our lives . in order to search for environmental factors related with chromosome disorders , a hospital - based case - control study about down syndrome was carried out
论文以ds为例开展了以医院为基础的病例-对照研究，分离导致染色体不分离的可能因素；同时探讨小剂量电离辐射与染色体不分离的关系及其分子机制。