Which of the following would happen if a small transposable element has moved in between the promoter and the transcriptional start site of a structural gene?
Question: Which of the following would happen if a small transposable element has moved in between the promoter and the transcriptional start site of a structural gene?
a) structural gene will be transcribed and translated along with the transposable element.
b) transposable element will be transcribed and not the structural gene
c) structural gene expression will not be affected at all
d) both a and b are possible.
e) both
d) both a and b are possible.
If a small transposable element has moved in between the promoter and the transcriptional start site of a structural gene, the expression of the gene may be affected in different ways depending on the location and orientation of the transposable element.
In some cases, the transposable element may contain its own promoter sequence, which could result in the transcription of the transposable element instead of the structural gene. This would lead to a decrease or complete loss of expression of the structural gene. In this scenario, option (b) would be correct.
Alternatively, the transposable element may be inserted in a way that allows the structural gene to still be transcribed and translated, but the presence of the transposable element could affect the efficiency of transcription or translation. This could result in decreased expression of the structural gene or a change in the timing or pattern of its expression. In this scenario, option (a) would be correct.
Therefore, both options (a) and (b) are possible outcomes when a small transposable element has moved in between the promoter and the transcriptional start site of a structural gene.
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