Looking to the future, it is likely we will see a reduction in the number of car trips Americans take and a rise in the number of trips they take by foot, bicycle, public transit or train.
Transcription is the process whereby a DNA base sequence is copied to form an RNA molecule. The production of mRNA... Cell transcription occurs in the nucleus of the cell where the DNA is located. Transcription is the process whereby a DNA base sequence is copied to form an RNA molecule. The production of mRNA...
This is the machine that actually reads the DNA code and makes the RNA. Transcription factors that promote gene expression are called activators. Figure 1 shows transcription factors and RNA polymerase (RNAP) making an mRNA copy of the DNA. Interestingly, transcription factors can also prevent the transcription of a gene.