Advertisements
Advertisements
Question
State whether the following statement is true or false.
The primary transcript is much longer than mature mRNA because of the presence of introns in the former.
True or False
Advertisements
Solution
This statement is true.
Explanation:
The primary transcript (or pre-mRNA) contains both exons, which code for proteins, and introns, which are non-coding sequences. During the process of RNA splicing, the introns are removed, and the exons are joined together to create the mature mRNA. Because introns often make up a large portion of the gene's length, their removal significantly shortens the molecule before it leaves the nucleus for translation.
shaalaa.com
Is there an error in this question or solution?
