Q.

Given below are two statements. One is labelled Assertion (A) and the other is labelled Reason (R). 

Assertion (A): Contact inhibition is a property of normal cells that helps in regulation of cell growth. 
Reason (R): Normal cells stop dividing once they come in contact with a neighbouring cell.

In light of the above statements, choose the correct answer from the options given below. 

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a

Both (A) and (R) are true but (R) is not the correct explanation of (A). 

b

Both (A) and (R) are false.

c

(A) is true but (R) is false.  

d

Both (A) and (R) are true and (R) is the correct explanation of (A).  

answer is A.

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Detailed Solution

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Both the Assertion (A) and Reason (R) are true, and the Reason (R) correctly explains the Assertion (A).

Contact inhibition is indeed a mechanism by which normal cells regulate their growth by stopping division when they come into contact with neighboring cells. This helps maintain proper tissue architecture and prevents excessive cell proliferation.

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