Question

Given below are two statements :
one is labelled as
Assertion (A) and the other is labelled as
Reason (R).
Assertion (A) :
A cDNA library contains only expressed genes.
Reason (R) :
A cDNA library is made from the mRNA molecules of a cell population.
In the light of the above statements, choose the most appropriate answer from the options given below :

• A. Both (A) and (R) are correct and (R) is the correct explanation of (A)
• B. Both (A) and (R) are correct but (R) is not the correct explanation of (A)
• C. (A) is correct but (R) is not correct
• D. (A) is not correct but (R) is correct

Hint:

Remember:
• Genomic library \(\rightarrow\) Contains entire genome
• cDNA library \(\rightarrow\) Contains only expressed genes \[ \text{mRNA} \xrightarrow{\text{Reverse Transcriptase}} \text{cDNA} \] cDNA libraries are tissue-specific because different tissues express different genes.

Answer 1

The Correct Option is A