Question about consensus and the relationship to transcriptional activity You have discovered the start site of transcription for a bacterial gene, psu1. You look at thesequence upstream and downstream of the transcriptional start site for psu1 and findsequences very similar to the consensus bacterial -10 and -35 promoter sequences, but forthe psu1 gene these sequences are only present 20 nucleotides downstream of thetranscriptional start. Which of the following is most likely?The psu1 promoter is downstream of the transcriptional start site.There is no psu1 promoterThe psu1 gene is not transcribed○ The psu1 promoter is likely a weak promoterThe psu1 promoter is likely a strong promoter

In bacterial transcription, promoters are typically located upstream (5' direction) of the…

Answered: You have discovered the start site of…

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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Similar questions

The Events in Transcription Initiation Describe the sequence of events involved in the initiation of transcription by E. coil RNA polymerase. Include in your description those features a gene must have for proper recognition and transcription by RNA poIymerase.
Transcriptional regulators are proteins that bind to promoters (the 5-flanking regions of genes) to regulate their transcription. Assume that a particular transcription regulator normally promotes transcription of gene X, a transport protein. If a mutation makes this regulator gene nonfunctional, would the resulting phenotype be similar to a mutation in gene X itself? Why or why not?
Post-transcriptional Modification of Eukaryotic mRNAs What might be the advantages of capping, methylation, and polyadenylylation of eukaryotic mRNAs?
Given the following tRNA anticodon sequence, derive the mRNA and the DNA template strand. Also, write out the amino acid sequence of the protein encoded by this message. tRNA: UAC UCU CGA GGC mRNA: protein: How many hydrogen bonds would be present in the DNA segment?
Substrate Binding by RNA Polymerase RNA polymerase has t binding sites for ribonucleoside triphosphates: the initiation site and the elongation site. The initiation site has a greater Km for NTPs than the elongation site. Suggest what possible significance this fact might have for the control of transcription in cells.
Consequences of the Wobble Hypothesis Point out why Cricks wobble hypothesis would allow fewer than 61 anticodons to be used to translate the 61 sense codons. How might wobble tend to accelerate the rate of translation?
The pre-mRNA transcript and protein made by several mutant genes were examined. The results are given below. Determine where in the gene a likely mutation lies: the promoter region, exon, intron, cap on mRNA, or ribosome binding site. a. normal-length transcript, normal-length nonfunctional protein b. normal-length transcript, no protein made c. normal-length transcript, normal-length mRNA, short nonfunctional protein d. normal-length transcript, longer mRNA, shorter nonfunctional protein e. transcript never made
If the coding region of a gene (the exons) contains 2,100 base pairs of DNA, would a missense mutation cause a protein to be shorter, longer, or the same length as the normal 700 amino acid proteins? What would be the effect of a nonsense mutation? A sense mutation?
Which of the following is/are typically removed from pre-mRNA during nuclear processing in eukaryotes? (a) upstream leader sequences (b) poly-A tail (c) introns (d) exons (e) all the preceding
Figure 28.41 gives some examples of recombination in IgG codons 95 and 96, as specified by the Vkand Jkgenes. List the codon possibilities and the amino acids encoded if recombination occurred in codon 97. Which of these possibilities is less desirable?
The Lariat Intermediate in RNA Splicing Draw the structures that comprise the lariat branch point formed during mRNA splicing: the invariant A. its 5â€™-R neighbor, its 3â€™-Y neighbor, and its 2â€™-G neighbor.
Comparison of Prokaryotic and Eukaryotic Transcription Make a list of the ways that transcription in eukaryotes differs from transcription in prokaryotes.

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