Protein molecules contributing to the appearance of anisotropic bands in sarcomere is

Actin

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Troponin

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Myosin

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Both a & c

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Solution

The correct option is D Both a & c
Anisotropic or A band is formed due to the overlapping of thin filament composed of Actin and thick filament composed of myosin. Interaction between these filaments in the A band is responsible for muscle contraction.

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