By detecting its structure in the tumour tissue, we find that the sum of its deletion or mutation rate reaches 35%.
通过检测肿瘤组织中该基因的结构，发现该基因在肿瘤组织中的缺失或突变率的总和达到35%。
Most of the chlorophyll deletion occurred in M1 were belonged to somatic mutation or caused by radiation injury so that they usually were not inheritable.
在M_1所产生的叶绿素缺失中，大多数属于体细胞突变，或是由于辐射损伤所致，一般是不能遗传的；
This can occur through a mutation in the gene's DNA sequence or through deletion of the gene.
这种缺失可能起源于基因的突变或者通过基因序列的缺失而产生。
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