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Which of the following chromosomes are involved in myelocytic leukaemia?

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in Biology – Class 12 by (271k points)
Which of the following chromosomes are involved in myelocytic leukaemia?

(a) 7^th and 20^th

(b) 9^th and 22^nd

(c) 1^st and 2^nd

(d) 3^rd and 4^th

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This interesting question is from Human Health and Disease topic in portion Human Health and Disease of Biology – Class 12

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Correct choice is (b) 9^th and 22^nd

Explanation: In myelocytic leukaemia, 9^th and 22^nd chromosomes bring their jumping genes together which results in the rearrangement of genetic material between them. It leads to the degeneration of erythroblastic tissue of bone marrow. There is bleeding at different places in the body.

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