Direction for: In each of the following questions a statement of Assertion is given followed by a corresponding statement of Reason just below it. Of the statements mark the correct answer as
Assertion: Senescence is the time when age associated defects are manifested. Reason: Certain genes may be undergoing sequential switching on and off during ones life.A) If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
B) If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
C) If Assertion is true statement but Reason is false.
D) If both Assertion and Reason are false statements.
Correct Answer: A
Solution :
Senescence is the process of ageing which involves the progressive deterioration in activity of cells tissues organs etc. Ageing may be due to gradual accumulation of somatic mutations or too late expression of genes not subject to strong selection.
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