Assertion :Rigor mortis is the state of body stiffening prior to death. Reason: It is due to relaxation of action and myosin filaments.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is D Both Assertion and Reason are incorrect
Rigor mortis refers to the contraction of all muscles of the body without action potentials which cause them to become rigid after death.
It is caused by the absence of ATP required for the separation of cross-bridges of actin filaments during relaxation. It occurs several hours after death. So, the correct answer is option D.

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