Listed in parts a through g are some mutations that were found in the 5′ UTR of the trp operon of E. coli. What will the most likely effect of each of these mutations be on the transcription of the trp structural genes? a. A mutation that prevents the binding of the ribosome to the 5′ end of the mRNA 5′ UTR b. A mutation that changes the Trp codons in region 1 of the mRNA 5′ UTR into codons for alanine c. A mutation that creates a stop codon early in region 1 of the mRNA 5′ UTR d. Deletions in region 2 of the mRNA 5′ UTR e. Deletions in region 3 of the mRNA 5′ UTR f. Deletions in region 4 of the mRNA 5′ UTR g. Deletion of the string of adenine nucleotides that follows region 4 in the 5′ UTR
Listed in parts a through g are some mutations that were found in the 5′
UTR of the trp operon of E. coli. What will the most likely effect of
each of these mutations be on the transcription of the trp structural
genes?
a. A mutation that prevents the binding of the ribosome to the 5′ end of the
mRNA 5′ UTR
b. A mutation that changes the Trp codons in region 1 of the mRNA 5′
UTR into codons for alanine
c. A mutation that creates a stop codon early in region 1 of the mRNA 5′
UTR
d. Deletions in region 2 of the mRNA 5′ UTR
e. Deletions in region 3 of the mRNA 5′ UTR
f. Deletions in region 4 of the mRNA 5′ UTR
g. Deletion of the string of adenine
5′ UTR
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