6
QuizMultiple Choice

DNA Mutations — Unit test

Question 6 of 14 • TX-Biology A-ACC RISD Quest

Which step in transcription occurs first?

Answer
A
mRNA moves the code from the nucleus to the ribosome for protein production.
B
A gene is expressed through protein production.
C
RNA polymerase attaches to the promoter.
D
A repressor protein must attach to the operator.
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