Here's why:
* DNA is located in the nucleus: DNA, the genetic blueprint, contains the instructions for making proteins.
* Transcription: The process of mRNA synthesis, called transcription, occurs within the nucleus. During transcription, the DNA sequence of a gene is copied into a messenger RNA (mRNA) molecule.
* mRNA travels to the cytoplasm: Once synthesized, the mRNA molecule exits the nucleus and travels to the cytoplasm, where it is used as a template to direct protein synthesis (translation).
In prokaryotic cells, which lack a nucleus, the process of transcription occurs in the cytoplasm.
