8547
Ronald Reagan Survived a ?

im pretty sure it was an  assassination attempt

Explanation:

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.