A mutation in a bacterial protein-coding gene with a standard consensus promoter deletes the two base pairs at the transcription start site and at the position immediately preceding it (the -1 and +1 positions). What will be the most likely effects, if any, on the transcript and the encoded polypeptide? Both the transcript and the polypeptide will be unchanged. O The transcript will be 2 bases shorter; the polypeptide will be completely different due to a frameshift. The transcript will be 2 bases shorter; the polypeptide will be one amino acid shorter but otherwise unchanged. Transcription will not be initiated, so ncither a transcript nor a polypeptide will be produced. O The transcript will be 2 bases shorter: the polypcptide will be unchanged.
A mutation in a bacterial protein-coding gene with a standard consensus promoter deletes the two base pairs at the transcription start site and at the position immediately preceding it (the -1 and +1 positions). What will be the most likely effects, if any, on the transcript and the encoded polypeptide? Both the transcript and the polypeptide will be unchanged. O The transcript will be 2 bases shorter; the polypeptide will be completely different due to a frameshift. The transcript will be 2 bases shorter; the polypeptide will be one amino acid shorter but otherwise unchanged. Transcription will not be initiated, so ncither a transcript nor a polypeptide will be produced. O The transcript will be 2 bases shorter: the polypcptide will be unchanged.
Biology Today and Tomorrow without Physiology (MindTap Course List)
5th Edition
ISBN:9781305117396
Author:Cecie Starr, Christine Evers, Lisa Starr
Publisher:Cecie Starr, Christine Evers, Lisa Starr
Chapter7: Gene Expression And Control
Section: Chapter Questions
Problem 4CT
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