The theory of ageing holds that ageing is due to [MP PMT 2001] – McqOptions

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1.	The theory of ageing holds that ageing is due to [MP PMT 2001]
A.	Random mutation in D.N.A. of somatic cells
B.	Increased cross-linkage of collagen & other proteins
C.	Cumulative result of damage to tissues by free radicals
D.	All of these
Answer» E.

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