There are different types of genes for encoding three types of RNA. Protein coding genes are transcribed by RNA polymerase II to yield mRNA. Ribosomal RNA (rRNA) are transcribed by RNA polymerase I. Likewise, transfer RNA (tRNA) are transcribed by polymerase III.

RNA mRNA tRNA

rma polymerase 1, rna polymerase 2, rna polymerase 3

The enzyme that transcribes the DNA into RNA is called RNA polymerase.

RNA polymerase is the enzyme that makes mRNA from a strand of DNA.