Transcription must occur before translation because a ribosome needs an mRNA blueprint to construct a protein. The operator is activated when lactose binds to the lac repressor and inactivated when the lac repressor binds to the operator. The last line shows a sequence of mRNA codons.

1. ANSWERS
Transcription must occur before translation
because in order for a ribosome to construct a
protein, it must have a genetic blueprint in the
form of mRNA
The operator is activated when lactose binds to
the lac repressor. The operator is inactivated
when the lac repressor binds with the operator
AUG CCG UAA CGU GUA AAA UCC CCG UUA UAA
UUU GCU UUA