| Direction: Each of these questions contains two statements |
| Assertion [A] and Reason [R]. Each of these questions also has four alternative choices, any one of which is the correct answer. You have to select one of the codes [a], [b], [c] and [d] given below. |
| Assertion [A] hnRNA is larger than mRNA. |
| Reason [R] hnRNA has non-coding introns which are pot required for translation. |
A) Both A and R are true and R is the correct explanation of A
B) Both A and R are true, but R is not the correct explanation of A
C) A is true, but R is false
D) A is false, but R is true
Correct Answer: A
Solution :
[a] Both A and R are true and R is the correct explanation of A. The primary transcript in eukaryotes, i.e. the mRNA is much larger as it contains both introns and exons. It is the precursor of mRNA. During post-transcriptional modification. Introns (the intervening sequences), which do not code for proteins are removed and all exons are joined to form fully prossessed mRNA.
You need to login to perform this action.
You will be redirected in
3 sec
