"If the DNA polymerase is a genetic photocopier, an RNA polymerase is like a genetic fax machine: it produces a copy of the gene for transmission from the cell's nuclear headquarters to its cytoplasmic manufacturing facility."
Fax machines aren't as common as they used to be.
Feel free to be the first
Please review the linked page for context.
If you can think of something better than this,
please add it to the database