chromosome deficiency

例句：

1. 1. The patient has a chromosome deficiency that affects his fertility.
   这名患者患有影响其生育能力的染色体缺陷。
2. 2.The researcher discovered a new gene responsible for the chromosome deficiency in the population.
   研究者发现了一种新的基因，它负责该人群的染色体缺陷。
3. 3. The family's genetic counselor recommended genetic testing to identify any chromosome deficiencies.
   家庭的遗传顾问推荐进行基因测试以识别任何染色体缺陷。