Answer:
I've responded to each scenario individually, please see below:
1. mutation that prevents ribosome binding to the mRNA
No transcription occurs
2. 5' UTR mutation that changes region 1 tryptophan codons into alanine codons
Transcription when alanine is low
3. mutation that creates a stop codon in region 1 of mRNA 5' UTR
Transcription occurs, a truncated protein will be made during translation
4. deletions in region 2 of the mRNA 5' UTR
Transcription occurs, region 1 and 2 might get paired together
5. deletions in region 3 of the mRNA 5' UTR
Transcription occurs, region 3 and 4 could combine to form a hairpin loop structure
6. deletions in region 4 of the mRNA 5' UTR
Transcription occurs, region 3 and 4 could combine to form a hairpin loop structure
7. deletion of the string of adenine after region 4 of the mRNA 5' UTR
Transcription occurs, however, it will not be as stable a molecule because of losing its polyA tail
Hope that answers the question, have a great day!
