A because the vesicles transport materials and nutrients around the body.
Answer: Transcription - A
Explanation:
This problem is talking about the lac operon and the gene expression of lac operon. If the gene is turned off, then transcription, the generation of mRNA won't occur.
<span>
1 = Birds, 2 = Mammals, 3 = Amphibians.
I took the test
</span>
A i’m pretty sure . if i’m wrong please correct .