Here's why:
* DNA is the blueprint: DNA contains the genetic code for building and maintaining an organism. This code is stored in the nucleus.
* mRNA is the messenger: When a protein is needed, a copy of the relevant gene's DNA sequence is made in the form of mRNA.
* Exiting the nucleus: mRNA then leaves the nucleus through nuclear pores and enters the cytoplasm.
* Translation: In the cytoplasm, the mRNA molecule is used as a template to assemble amino acids into a specific protein, guided by the ribosomes.
So, while DNA remains in the nucleus, mRNA is created there and then travels to the cytoplasm to direct protein synthesis.
