Milk generation presently causes much more contamination than it utilized to, mostly because so much of the production is solidified into huge dairy ranches, and transfer of that kind of fluid squander is troublesome without harming adjacent water sources.
The right answer is the promoter.
• The promoter is a nucleotide sequence that allows the transcription of the gene into mRNA. It is recognized by the RNA polymerase that initiates transcription. During the synthesis of the RNA, the promoter indicates which gene must be expressed and therefore which proteins the cell must produce. In an operon it is common to all genes.
• The operator is a segment of DNA and / or messenger RNA to which a chemical signal (a regulatory molecule) binds. It can be either a repressor signal or a transcription activating signal (DNA operator) or translation (RNA operator) of the genes of the operon. The RNA polymerase does not recognize this structure.
I believe the strand of mRNA that would be produced will be CGA UUC. mRNA is formed from the process of transcription which takes place in the nucleus where DNA molecule acts as primer, catalyzed by the enzyme RNA polymerase. One of the differences between DNA and RNA is that the nucleotide base Tyamine (T) is replaced by uracil (U) when forming RNA molecule.