Chromosome abnormality

（重定向自Chromosome aberrations）

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	Chromosome aberrations
释义	Chromosome aberrations 英语例句库 In the patients with malignant neoplasms, exitsmce of chromosome aberration predicted highly malignant in terms of cither clinical metastasis or pathological grading. 有染色体数目畸变的恶性肿瘤患者，无论临床转移或病理分级恶性程度都较高。原声例句透视百科科技类 We know that radiation causes or will induce these chromosome aberrations, or rearrangement of the chromosomes. 我们已知辐射会引起或诱发染色体的畸变或重排。英语百科 Chromosome abnormality （重定向自Chromosome aberrations） 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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