RNA polymerase binds to the promoter sequence on the DNA molecule. The promoter has a TATA box, which binds with the TBP (TATA binding protein) that is in the RNA polymerase multiprotein complex. The TSS (transcription start site) indicates where RNA polymerase can start transcription.
The oesophagus is the region of the alimentary canal where the food passes without the absorption of nutrients. In oesophagus, we find peristalticmovement which is basically rhythmic contraction and relaxation of the oesophagus in order to facilitate the easy passage for the food to pass from mouth to stomach.
The oesophagus is a muscular tube which measures about 8 inches long.
