The diagram shown here is part of an RNA transcript containing four open reading frames (M, H, K, and L) and three introns (1, 2, 3). Splicing out an intron involves a spliceosome facilitating the cleavage of the DNA at nucleotides on either side of the intron. How many processed transcripts are possible if all three 5' nucleotides (immediately before each intron) and all three 3' nucleotides (immediately after each intron) are cleaved?

Question

The diagram shown here is part of an RNA transcript containing four open reading frames (M, H, K, and L) and three introns (1, 2, 3).

Splicing out an intron involves a spliceosome facilitating the cleavage of the DNA at nucleotides on either side of the intron. How many processed transcripts are possible if all three 5' nucleotides (immediately before each intron) and all three 3' nucleotides (immediately after each intron) are cleaved?