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Question

Philadelphia chromosome is

A
13th chromosome
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B
22nd chromosome
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C
17th chromosome
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D
21st chromosome
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Solution

The correct option is B 22nd chromosome
Philadelphia chromosome is 22nd chromosome. It was first discovered in Philadelphia in chronic myeloid leukaemia. It causes a particular abnormality that is associated with chronic myelogenous leukemia. It is the result of a reciprocal translocation between chromosome 9 and 22.

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