Place the following steps in the expression of the lac operon in the order in which each occurs for the first time after a cell is induced_______________--
A.A peptide bond is formed between the first two amino acids in beta-galactosidase (lac Z).
B.RNA polymerase ends transcription of the last gene in the lac operon (lacA).
C.A phosphodiester bond is formed between two ribonucleotides.
D.A ribosomal RNA binds to a complementary sequence in mRNA.
E.Sigma protein binds to a specific DNA sequence.
F.A protein leaves an operator DNA sequence.