Final answer:
Correct and precise RNA splicing, conducted by spliceosomes, is essential for proper protein synthesis as it ensures that only coding sequences (exons) are expressed while non-coding introns are removed.
Step-by-step explanation:
In the process of RNA splicing, the precise and complete removal of introns is crucial for a successful translation. Introns are non-coding regions, and their removal ensures that only the exons, the coding sequences, are joined together to form a mature mRNA. The splicing process must occur with single-nucleotide accuracy because a mistake of even one nucleotide can shift the reading frame, resulting in a dysfunctional protein. This splicing is conducted by complexes known as spliceosomes, which recognize specific nucleotide sequences at the intron borders to perform the cutting and joining of RNA segments. It is also important to mention that RNA stability plays a significant role in how much protein is synthesized, as it determines the lifespan of the mRNA in the cytoplasm.