Here's why:
* DNA is located in the nucleus: DNA, the genetic blueprint, is housed within the nucleus, a membrane-bound organelle in eukaryotic cells.
* RNA is synthesized in the nucleus: RNA polymerase, the enzyme responsible for transcription, uses DNA as a template to synthesize RNA molecules. This process occurs within the nucleus.
* RNA exits the nucleus: Once transcribed, the RNA molecules (primarily mRNA) then exit the nucleus through nuclear pores and travel to the cytoplasm for translation.
In prokaryotic cells, which lack a nucleus, transcription takes place in the cytoplasm, as DNA is located directly in the cytoplasm.