After transcription begins, several steps must be completed before the fully processed mrna is ready to be used as a template for protein synthesis on the ribosomes.which three statements correctly describe the processing that takes place before a mature mrna exits the nucleus?
1. The DNA strand unwinds. 2. One strand becomes a template. It get's used for RNA Polymerase. 3. RNA Polymerase puts in RNA Nucleotides one at a time. Then, the new strand is made (Messages) After all of this happens it leaves the Nucleus to the Ribosome.
