The spliceosome removes _______ and joins _______ to produce mature mRNA.
- A
Promoters; terminators
- B
Exons; introns
- C
Codons; anticodons
- Dcheck_circle
Introns; exons
Explanation
Introns are spliced out; exons are joined together. "Exons" = expressed sequences that survive in the mature mRNA.