Final answer:
Transcription is the biological process where the genetic information in DNA is converted into an RNA molecule. It is a crucial step in gene expression and involves the enzyme RNA polymerase.
Step-by-step explanation:
Transcription is the process by which genetic information encoded in DNA is transferred to a RNA molecule. This is a fundamental part of gene expression, as it is the first step in the process of decoding the genetic instructions carried in DNA. During transcription, an enzyme called RNA polymerase reads the DNA strand and synthesizes a complementary, antiparallel RNA strand. This RNA molecule can be a messenger RNA (mRNA), which will be used as a template for protein synthesis, or various forms of non-coding RNA such as ribosomal RNA (rRNA) or transfer RNA (tRNA), which are involved in other cellular functions.