how does mrna leave the nucleus
Transport. Since the DNA is transcribed into mRNA in the nucleus, and protein synthesis takes place in the cytoplasm, the mRNA has to exit the nucleus to the cytoplasm.The environment in the nucleus differs in many ways from that of the cytoplasm.ince the DNA is transcribed into mRNA in the nucleus, and protein synthesis takes place in the cytoplasm, the mRNA has to exit the nucleus to the cytoplasm.