Final answer:
The two basal factors that are not part of the scaffold are activators and enhancers. Basal factors help position RNA polymerase at the start of a gene, while enhancers are bound by activators to bring a specific transcription factor to the initiation complex.
Step-by-step explanation:
Two basal factors that are not part of the scaffold are the activators and the enhancers. Basal factors help position RNA polymerase at the start of a gene, while enhancers are sites on the DNA strand that are bound by activators in order to bring a specific transcription factor to the initiation complex. The scaffold, on the other hand, consists of RNA polymerase and other transcription factors that form the initiation complex.