Indicate whether each of the following situations would increase or decrease tra
ID: 41743 • Letter: I
Question
Indicate whether each of the following situations would increase or decrease transcription of the trp operon.
A mutation that prevents the binding of the the ribosome to the 5' end of the mRNA 5'UTR.
Deletion in region 2 of the mRNA 5'UTR.
Deletion in region 3 of the mRNA 5'UTR.
Deletion of the string of adenine nucleotides that follows region 4 in the 5' UTR.
Addition of tryptophan to the media.
Deletion of the trpR gene.
decrease
increase
A mutation that prevents the binding of the the ribosome to the 5' end of the mRNA 5'UTR.
Deletion in region 2 of the mRNA 5'UTR.
Deletion in region 3 of the mRNA 5'UTR.
Deletion of the string of adenine nucleotides that follows region 4 in the 5' UTR.
Addition of tryptophan to the media.
Deletion of the trpR gene.
A.decrease
B.increase
Explanation / Answer
The trp operon is a group of genes that are transcribed to components that for production of tryptophan.
1. A mutation that prevents the binding of the the ribosome to the 5' end of the mRNA 5'UTR----------> Decrease
2. Deletion in region 2 of the mRNA 5'UTR. --------------> Decrease
3. Deletion in region 3 of the mRNA 5'UTR.-------------------> Decrase
4. Deletion of the string of adenine nucleotides that follows region 4 in the 5' UTR ----------------> Increase
5. Addition of tryptophan to the media--------------------------> Dcrease
6. Deletion of the trpR gene.---------------------------> Increase