You are studying a line of Eukaryotic cells. The cells are perfectly normal and are dividing naturally. But you find that even when you add the required transcription factors for specific genes, you cannot get the cells to produce the proteins from those genes. You check the DNA in those cells, and you find that the cells have the correct DNA sequence. What could explain these results? The cell has does not have RNA polymerase and cannot produce mRNA There is no start codon that signals to the ribosome when to start translation The structure of the chromatin may not allow those genes to be transcribed The promoter region is located far upstream of the coding region.