Final answer:
Type 1 pol III promoters consist of two GC-rich promoter sequences in the -45 to +20 region. Additional sequences can enhance initiation, and they can also include upstream promoters or promoters within the genes.
Step-by-step explanation:
The order of type 1 pol III promoters can vary depending on the specific gene being transcribed. However, in general, type 1 pol III promoters consist of two GC-rich promoter sequences in the -45 to +20 region. These sequences alone are sufficient for transcription initiation, but additional sequences in the region from -180 to -105 upstream of the initiation site can further enhance initiation. Type 1 pol III promoters can also include upstream promoters or promoters that occur within the genes themselves.