Final answer:
The number of nucleotides that need to be added to escape the promoter can vary depending on the specific gene and organism in question.
Step-by-step explanation:
In order to escape the promoter, an RNA molecule needs to transcribe a specific sequence of nucleotides, which includes the termination signal. The termination signal can vary depending on the type of polymerase. For example, in bacterial RNA polymerase, the termination signal is a C-rich region followed by the binding of a termination factor called the rho protein.
In eukaryotes, RNA polymerase II transcribes approximately 1,000-2,000 nucleotides beyond the end of the gene being transcribed, and the termination signal involves mRNA processing. Therefore, the number of nucleotides that need to be added to escape the promoter can vary depending on the specific gene and organism in question.