Final answer:
The gene name 'Dang' specified in the question does not correspond to known nomenclature for genes encoding RNA polymerase. A known RNA polymerase gene is called 'rpoB'. Determining which RNA polymerase transcribes a gene can involve the use of α-amanitin.
Step-by-step explanation:
The name of the gene that encodes the RNA polymerase is not specified as 'Dang,' which could be a typo or a misunderstanding in the question. In general, a gene is a segment of DNA (or RNA in some viruses) that codes for a single polypeptide chain or RNA molecule, which includes mRNA, tRNA, rRNA, regulatory sequences, and others. For instance, a mutation in the RNA polymerase subunit gene, known as rpoB, has been linked to changes in genetic code expression and resistance to certain antibiotics. Understanding which RNA polymerase transcribes a gene can be determined using an oligopeptide toxin called α-amanitin.