What happens to the information flow during transcription?

During transcription, the process involves the synthesis of RNA from a DNA template. This means that the information flow goes from DNA to RNA. The DNA sequence of a gene is transcribed by RNA polymerase, which reads the DNA strand and constructs a complementary RNA strand. This RNA strand carries the genetic information necessary for protein synthesis.

The directionality of this flow is significant; it reflects the foundational dogma of molecular biology, where genetic information is transferred from nucleic acids (DNA) to the next form of nucleic acids (RNA) before being translated into proteins. The other options do not align with the mechanism of transcription: RNA to DNA reverses the flow of genetic information, which does not occur during this process, while the flow from protein to nucleic acids or in both directions does not describe the transcription itself but rather involves other biological processes.