염색체 이상: 두 판 사이의 차이

91 바이트 추가됨 ,  8년 전
 
==염색체의 구조 이상==
염색체 구조의 이상은 몇가지 형태를 띨 수 있다.
When the chromosome's structure is altered, this can take several forms:
*[[염색체 결실|결실]]: A염색체의 portion일부가 of사라지거나 the chromosome is missing or deleted삭제된다. Known disorders in인간에서 humans알려진 include장애로는 [[Wolf-Hirschhorn syndrome]], which is caused by partial deletion of the short arm of chromosome 4; and [[Jacobsen syndrome]], also called the terminal 11q deletion disorder 을 포함한다.
*[[염색체 중복|중복]]: A염색체의 portion일부가 of복제되면서 the추가적인 chromosome유전 is물질을 duplicated, resulting in extra genetic material초래한다. Known human알려진 disorders인간의 include장애로는 [[Charcot-Marie-Tooth#Types of the disease|Charcot-Marie-Tooth disease type 1A]] which may be caused by duplication of the gene encoding [[peripheral myelin protein 22]] (PMP22) on chromosome 17 을 포함한다.
*[[염색체 전좌|전좌]]: Aㅎㄴ portion염색체의 of일부가 one다른 chromosome염색체로 is옮겨지는 transferred to another chromosome현상이다. There are two main두가지의 types주요 of유형이 translocations있다:
**[[Chromosomal translocation#Reciprocal (non-Robertsonian) translocations|Reciprocal translocation]]: Segments from two different chromosomes have been exchanged.
**[[Robertsonian translocation]]: An entire chromosome has attached to another at the centromere - in humans these only occur with chromosomes 13, 14, 15, 21 and 22.
*[[염색체 역위|역위]]: A염색체의 portion of부분이 the chromosome has broken off분리되어, turned upside down and reattached,뒤집혀지고 therefore다시 the결합되어 genetic유전 material물질이 is반전되는 inverted현상이다.
*[[Insertion (genetics)|Insertions]]: A portion of one chromosome has been deleted from its normal place and inserted into another chromosome.
*[[Ring chromosome|Rings]]: 염색체의 일부분이 분리되고, 원이나 고리 형태를 형성하는 것이다. 이 현상은 유전 물질의 손실을 동반할 수도, 하지 않을 수도 있다.
*[[Ring chromosome|Rings]]: A portion of a chromosome has broken off and formed a circle or ring. This can happen with or without loss of genetic material.
*[[Isochromosome]]: Formed by the mirror image copy of a chromosome segment including the centromere.
[[Chromosome instability syndrome]]s are a group of disorders characterized by chromosomal instability and breakage. They often lead to an increased tendency to develop certain types of malignancies.
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