Right answer is (a) True
For explanation: This includes the sequence segments located 35 and 10 base pairs (bp) upstream from the transcription start site. They are also referred to as the −35 and −10 boxes. For the σ70 subunit in Escherichia coli, for example, the −35 box has a consensus sequence of TTGACA. The –10 box has a consensus of TATAAT.