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Chromosomal duplication occurs when a section of DNA is accidentally duplicated when a chromosome is copied. A duplication may occur as the result unequal crossing over, the mispairing and exchange of DNA between genetically similar, nonhomologous chromosome regions that results in duplication of DNA in each daughter cell.

Bloom and Rett syndrome are caused by chromosomal duplications.

See alsoEdit

• Chromosome abnormalities

Chromosomal abnormalities

Autosomal trisomies:

Down syndrome, Edwards syndrome, Patau syndrome, Trisomy 9, Warkany syndrome 2

Autosomal monosomies/deletions:

Wolf-Hirschhorn syndrome, Cri du chat, Angelman syndrome/ Prader-Willi Syndrome

X/Y linked:

Turner syndrome, Triple X syndrome, Klinefelter's syndrome, XYY syndrome

Translocations:

Philadelphia chromosome, Burkitt's lymphoma This box: view • talk • edit

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