You have a segment of DNA that contains the following sequence:
5'-GGACTAGACAATAGGGACCTAGAGATTCCGAAA-3'
3'-CCTGATCTGTTATCCCTGGATCTCTAAGGCTTT-5'
You know that the RNA transcribed from this segment contains the following sequence:
5'-GGACUAGACAAUAGGGACCUAGAGAUUCCGAAA-3'
Which of the following choices best describes how transcription occurs?
(a) the top strand is the template strand; RNA polymerase moves along this strand from 5' to 3'
(b) the top strand is the template strand; RNA polymerase moves along this strand from 3' to 5'
(c) the bottom strand is the template strand; RNA polymerase moves along this strand from 5' to 3'
(d) the bottom strand is the template strand; RNA polymerase moves along this strand from 3' to 5'
Answer: D