全部

1·Objective to explore the effect of chromosomal abnormality and polygenic inheritance factor in female children with short stature.

目的探讨染色体异常和身高的多基因遗传因素在身材矮小女童中对矮小身材产生的作用。

2·Conclusion: it's effective to decrease the birth of fetal chromosomal abnormality by undergoing prenatal screening and diagnose with mother serum biochemical indicator in the second trimester.

结论孕中期应用母血清生化指标进行产前筛查，结合产前诊断是减少染色体异常患儿出生的有效方法。

3·The detection rate of the chromosomal abnormality of the abnormal fetus detected by ultrasound (33.33%) was higer than the trisomy 21 high risk group(4.54%) and abnormal delivery group(9.09%)(P<0.05).

其中超声示胎儿异常组染色体异常检出率（33.33%）明显高于21-三体高风险组（4.54%）、不良孕产史组的检出率（9.09%）（P<0.05）。

4·Caused by the abnormality of chromosome 21, Down syndrome is the most common chromosomal disease as well as one of the most frequent known genetic causes of mental retardation.

唐氏综合症由人体21号染色体病变引起。它是最常见的染色体疾病，也是最主要的导致智力落后的基因病变。

5·Klinefelter syndrome is still the most common chromosomal disease, balanced translocation accounts for largest proportion of autosomal abnormality.

克氏症仍是最常见的染色体疾病，染色体平衡易位核型占常染色体异常核型比例最大。

6·Background: Chromosomal number abnormality is one of the characteristic changes in tumor cells.

背景：肿瘤细胞的染色体数目畸变是肿瘤细胞的特征性改变之一。