人类染色体畸变chromosome aberration
Related factors
Numerical abnormality and mechanism
Structural abnormality and mechanism
Effects in molecular and cytobiology
Main contents
染色体畸变〔chromosome aberration〕:
是指体细胞或生殖细胞内染色体发生的异常改变〔结构畸变和数目畸变〕。
第一节 染色体畸变发生的原因
Section I: Factors correlated
to chromosome aberration
自发畸变〔spontaneous aberration〕
诱发畸变〔induced aberration〕
Chemical factors:药物、农药、工业毒物、食品添加剂
Physical factors: 射线
Biological factors:生物类*** 、病毒等
Maternal factors: 年龄
Related Factors
第二节 染色体数目异常及其产生机制
Section II: Numerical abnormality and its mechanism
整倍体改变(euploid)
数目畸变
非整倍体改变(aneupliod)
一、整倍体(euploid)
1 copy ----- haploid
2 copies --- dipoid
3 copies --- triploid
4 copies --- tetraploid
>2 copies - polyploid
三倍体(triploid):3n=69
69,XXX
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