AIPMT 2013 Biology Solved Paper

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Question : 21 of 90

Marks: +1, -0

The H-zone in the skeletal muscle fibre is due to:

extension of myosin filaments in the central portion of the A-band
the absence of myofibrils in the central portion of A-band
the central gap between myosin filaments in the A-band
the central gap between actin filaments extending through myosin filaments in the A band

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