Here's why:
* DNA contains the genetic code: DNA in the nucleus holds the blueprint for making all proteins.
* Transcription: DNA is transcribed into mRNA, which is a copy of the gene sequence needed for a specific protein.
* mRNA travels to the ribosome: The mRNA molecule travels out of the nucleus and into the cytoplasm, where it finds a ribosome.
* Translation: The ribosome reads the mRNA sequence and uses it to assemble amino acids into a protein chain.
So, mRNA acts as the messenger, carrying the genetic code from the DNA in the nucleus to the ribosomes, where protein synthesis takes place.
