Final answer:
It is false that introns do not have to be removed precisely from the primary transcript during RNA splicing; their precise removal is crucial for maintaining the correct reading frame and ensuring the production of functional proteins.
Step-by-step explanation:
The statement is false. While introns do not encode protein-coding information, they must be removed precisely during RNA splicing. Introns play crucial roles beyond coding for proteins, such as gene regulation and mRNA transport. However, their precise removal is necessary to ensure that the exons are rejoined correctly and the reading frame is maintained. If splicing does not occur with precision, down to a single nucleotide, the sequence of the rejoined exons would be shifted, potentially leading to a nonfunctional or dysfunctional protein due to a frame shift or incorrect amino acid sequence. Thus, splicing is a highly accurate process that is crucial for producing a functional mRNA that correctly translates into a protein.