Question

In RNA splicing :

Answer 1

The coding sequences, exons, are interrupted by non-coding sequences, introns. Introns are removed and exons are joined to produce functional RNA.

In Eukaryotes, the non-coding regions (Introns) are removed and the coding regions (Exons) are joined together, this process is known as splicing and it takes place within the nucleus region either at the time of transcription or immediately after it.

Hence, the correct answer is option “B” - Introns are removed and exons are joined together.