What is isochromosome?

Isochromosome

An isochromosome is a chromosome that has lost one of its arms and replaced it with an exact copy of the other arm. This is sometimes seen in some females with Turner syndrome or in tumor cells. This may also cause an isochromosome to have two centromeres (Tobias, 2011)

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Some articles on isochromosome:

Isochromosome
... An isochromosome is a chromosome that has lost one of its arms and replaced it with an exact copy of the other arm ... This may also cause an isochromosome to have two centromeres (Tobias, 2011) ...
Pallister–Killian Syndrome - Diagnosis
... The isochromosome can be primarily detected in samples of skin fibroblasts, as well as in chorionic villus and amniotic fluid cell samples ... It is also possible to detect the isochromosome in circulating lymphocytes, as well as other amniotic and placental samples ... There is no strict limit as to where the isochromosome can be found ...