a. Use circles for activators and squares for repressors. Draw the shapes bound to each promoter region.b. Under the word gene write “ON” or “OFF” to indicate if the gene is transcribed or not under the different conditions. 3. This is a schematic of a very simple pattern of gene expression.Yes means the protein is present and can bind the promoter.No means the protein is absent.Transcription factors are proteins that help regulate transcription by binding DNA.Activators are transcription factors that help transcription. For example, they mightbend the promoter and make it accessible to RNA polymerase.Repressors are transcription factors that inhibit transcription. For example, they mightbind the promoter and stop the RNA polymerase from binding.a. Use circles for activators and squares for repressors. Draw the shapes bound to eachpromoter region.b. Under the word gene write "ON" or "OFF" to indicate if the gene is transcribed or not underthe different conditions.Activator Repressorpromotergeneyesyesyesouyesououou

Transcription - The process by which the information on one strand of DNA is copied to mRNA is…

a. Use circles for activators and squares for repressors. Draw the shapes bound to each promoter region. b. Under the word gene write “ON” or “OFF” to indicate if the gene is transcribed or not under the different conditions.

a. Use circles for activators and squares for repressors. Draw the shapes bound to each promoter region. b. Under the word gene write “ON” or “OFF” to indicate if the gene is transcribed or not under the different conditions.

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter16: Regulation Of Gene Expression

Section: Chapter Questions

Problem 6TYK

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Question

a. Use circles for activators and squares for repressors. Draw the shapes bound to each promoter region.

b. Under the word gene write “ON” or “OFF” to indicate if the gene is transcribed or not under the different conditions.

3. This is a schematic of a very simple pattern of gene expression.
Yes means the protein is present and can bind the promoter.
No means the protein is absent.
Transcription factors are proteins that help regulate transcription by binding DNA.
Activators are transcription factors that help transcription. For example, they might
bend the promoter and make it accessible to RNA polymerase.
Repressors are transcription factors that inhibit transcription. For example, they might
bind the promoter and stop the RNA polymerase from binding.
a. Use circles for activators and squares for repressors. Draw the shapes bound to each
promoter region.
b. Under the word gene write "ON" or "OFF" to indicate if the gene is transcribed or not under
the different conditions.
Activator Repressor
promoter
gene
yes
yes
yes
ou
yes
ou
ou
ou

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2. You are excited because you discovered a DNA sequence motif that appears to be in the promoters of very highly expressed genes. You suspect that it is the binding site for a transcription factor (TF). The problem is, that you can't identify the TF! The motif you found is: A-A-T-C-G-C/G-A/T-A/T-C/G-A/T where 'X' is any nucleotide and '/' denotes either of the two nucleotides. a) You give up trying to identify the TF and decide that you are going to engineer your own TF. How might you go about synthetically creating a novel TF that best targets this sequence? What considerations would you need to take into account here? b) How might you go about confirming that this sequence is indeed important for gene expression?
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1. What happens during transcription? Possible sentence frame: Transcription is the process in which the information from converted into This happens by is
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1. DNA is a linear code of biological information in the form of genes. DNA is transcribed to another linear molecule RNA, which is translated into a linear polypeptide. For each gene, there sites which control the transcription and translation and sites which defines the beginning and end of the gene, the mRNA and the polypeptide. For a single gene, its mRNA and the resulting polypeptide, draw all the three molecules in parallel and indicate the control sites and those which mark the beginning and end of each.
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