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M cyclin cdk is activated by positive feedback loop.

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M cyclin cdk is activated by positive feedback loop.

(a) True

(b) False

The question was posed to me in examination.

My question is from Cell Cycle Stages topic in division Cancer Biology & Methods in Cytogenetics of Cytogenetics

1 Answer

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Right option is (a) True

The explanation is: The M-cyclin Cdk when bound to sic1 in turn also causes slight transcription of M cyclin gene. Increasing concentration of M cyclin further increases its activity. This works as a positive feedback loop which ultimately leads to M cdk activation.

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