deletion

noun

1. the act of deleting something written or printed

2. the omission that is made when an editorial change shortens a written passage

e.g. an editor's deletions frequently upset young authors
both parties agreed on the excision of the proposed clause

Synonym: excisioncut

3. (genetics) the loss or absence of one or more nucleotides from a chromosome

4. any process whereby sounds or words are left out of spoken words or phrases

Synonym: omission

1. deletion的解释

1. 缺失：你提到的 染色体构造异常 : 缺失(deletion)、重复(duplication)重复(duplication)是 细胞分裂,基因复制的时候偶尔会产生的小差错... 有点像会计师看错帐目自己都说的不知道在说什麼, 反正, 不只是Huntington's Disease,

2.

2. 删去：若插入(insertion)或删去(deletion)一个碱基,就会使这以后的读码发生错误,这称移码(frame-shift). 由于移码引起的突变称为移码突变(frame-shift2、一般情况下密码是不重叠(non-overlapping)的:即每三个碱基编码一个氨基酸,

3.

3. 缺失突变：具有 WT-1 缺失突变(deletion)的小鼠不会形成产生性腺的中胚层,因此表示它可能是SRY 的上游而非下游基因. 具有 46,XY 核型,以及体染色体遗传短指发育不良(campomelic dysplasia)合并性别倒错的个体同时会产生大范围的骨骼异常.