Chromosome abnormality

（重定向自Chromosomal mutation）

The three major single chromosome mutations; deletion (1), duplication (2) and inversion (3).

The two major two chromosome mutations; insertion (1) and Translocation (2).

A chromosome anomaly, abnormality, aberration, or mutation is a missing, extra, or irregular portion of chromosomal DNA. It can be from an atypical number of chromosomes or a structural abnormality in one or more chromosomes. Chromosome mutation was formerly used in a strict sense to mean a change in a chromosomal segment, involving more than one gene. A karyotype refers to a full set of chromosomes from an individual that can be compared to a "normal" karyotype for the species via genetic testing. A chromosome anomaly may be detected or confirmed in this manner. Chromosome anomalies usually occur when there is an error in cell division following meiosis or mitosis. There are many types of chromosome anomalies. They can be organized into two basic groups, numerical and structural anomalies.

单词	Chromosomal mutation
释义	Chromosomal mutation 原声例句 Osmosis-肌骨 Ewing sarcoma is associated with chromosomal mutations, specifically a translocation between the EWSR1 gene on chromosome 22 and FLI1 gene on chromosome 11. 尤因肉瘤与染色体突变有关，特别是22号染色体上的EWSR1基因和11号染色体上的FLI1基因之间的易位。英语百科 Chromosome abnormality （重定向自Chromosomal mutation） A chromosome anomaly, abnormality, aberration, or mutation is a missing, extra, or irregular portion of chromosomal DNA. It can be from an atypical number of chromosomes or a structural abnormality in one or more chromosomes. Chromosome mutation was formerly used in a strict sense to mean a change in a chromosomal segment, involving more than one gene. A karyotype refers to a full set of chromosomes from an individual that can be compared to a "normal" karyotype for the species via genetic testing. A chromosome anomaly may be detected or confirmed in this manner. Chromosome anomalies usually occur when there is an error in cell division following meiosis or mitosis. There are many types of chromosome anomalies. They can be organized into two basic groups, numerical and structural anomalies.
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