The statements below show stages in protein synthesis. 1 Copies of the gene are moved to the cytoplasm as mRNA molecules. 2 Each ribosome links amino acids together to make a protein molecule. 3 The gene that codes for a protein is copied in the nucleus. 4 The mRNA molecules move through ribosomes. Which order of steps is correct?
- A1 2 4 3
- B1 3 2 4
- C3 1 4 2
- D3 4 2 1