chromosomal disease

例句：

1. 1. Chromosomal diseases are a majorcause of birth defects.
   染色体疾病是出生缺陷的主要原因。
2. 2. Many genetic disorders are caused by mutationsin the chromosomal DNA.
   许多遗传性疾病是由染色体DNA的突变引起的。
3. 3. The studyof chromosomal diseases is important forunderstanding the causes of certain diseases.
   研究染色体疾病对于理解某些疾病的成因非常重要。