In prokaryotes, there are two known types of transcription terminators: the ρ-dependent termination and the ρ-independent termination. Rho (ρ) is a protein factor present in prokaryotes. In a ρ-dependent termination, it migrates toward the 3' end until it reaches the transcription complex paused at a termination site.
The extreme 3' end of a prokaryotic mRNA is given below. What features of this RNA indicate that the sequence includes a transcription termination site? Check all features that apply.
5' ... GAUGGGCGGGGGGGAAAUUAACCCCCCCGCCCUUUUUUU 3'
A. It contains a stop codon
B. It is a complete ORF
C. It has an array of U nucleotides near its 3' end
D. It has the potential to form a stem-loop structure
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