RNA is produced by a process called transcription, which is carried out by an enzyme called RNA polymerase.

Here's a breakdown:

* DNA contains the genetic code.

* RNA polymerase binds to a specific region on DNA called a promoter, which signals the start of a gene.

* RNA polymerase then "reads" the DNA sequence and uses it as a template to create a complementary RNA molecule.

* This RNA molecule is called messenger RNA (mRNA), and it carries the genetic information from the DNA to the ribosomes, where proteins are made.

So, in short, RNA is produced by DNA through the process of transcription, facilitated by the enzyme RNA polymerase.