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If the transcriptional termination signal for gene X is deleted in E. coli, the resulting protein...

If the transcriptional termination signal for gene X is deleted in E. coli, the resulting protein X made from that RNA will be:

a) longer because the termination signal has been removed

b) shorter because information to necessary to synthesize that protein will be missing

c) not changed, protein X of the appropriate length will still be made

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Answer #1

Answer: (a)

Explanation:

Transcriptional termination signal for a gene X in E. coli would code for either of the three STOP codons – UAG, UAA, or UGA in the 3' end of the mRNA.

If there is no stop codon in the mRNA, the resulting protein X made from that RNA will be longer because the termination signal has been removed and ribosome would translate mRNA until the 3' end of the mRNA is not encountered.

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