chromosome substitution

例句：

1. 1. The researchers found that the gene replacement could be a key to solving the disease.
   研究人员发现，基因替换可能是解决该疾病的关键。
2. 2. The scientist conducted an experiment to test the effectiveness of the gene replacement therapy.
   科学家进行了一项实验，以测试基因替换疗法的有效性。
3. 3.The new drug has been shown to have a significant impact on the treatment of cancer patients with chromosome substitutions.
   新药已被证明对患有染色体替换的癌症患者有显著影响。