Can bicoid change gene expression in a cell? a.Describe one piece of evidence to support your...
Can bicoid change gene expression in a cell?
a.Describe one piece of evidence to support your answer.
Homework Answers
Solution: In the Drosophila oocyte, Bicoid can act both as transcription factor which activates the production of hunchback protein. Also it act as translation inhibitor of caudal protein. Generally biocoid induces the development of anterior region of the organism and caudal induces the posterior region of the organism. In drsosphila they have inhibit the expression of caudal and other genes near anterior region. Bicoid induces the inhibition by binding to the bicoid recognition element at the 31 UTR of caudal mRNA. After binding to the 31 UTR they recruits other proteins such as d4EHP for the enhancement of inhibition.
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Can bicoid change gene expression in a cell?
a.Describe one piece of evidence to support your...
Please answer these 3 questions please. During an infection: One B cell can make more than...
Please answer these 3 questions please.
During an infection: One B cell can make more than two different antibodies, provided that they recognize the same antigen Each B-cell produces antibodies to a variety of antigens A variety of antibodies are produced by many B cells, but each B cell only produces one type of antibody The same type of antibody is produced by many B cells Bicoid is important for generation of the anterior-posterior axis by regulating expression of multiple...
identify one gene (other than myosin heavy chain) that is upregulated during C2C12 cell differentiation. Describe...
identify one gene (other than myosin heavy chain) that is upregulated during C2C12 cell differentiation. Describe the experimental evidence supporting an increased expression of this gene during differentiation. What is the purpose of this gene and how does it make C2C12 cells more specialized? Explain.
What do we call the phenomenon where the expression of one gene or two genes can...
What do we call the phenomenon where the expression of one gene or two genes can then affect the expression of another gene? Why is this concept so powerful in terms of genetic expression in multicellular organisms?
Your friend decides to place Green Fluorescent Protein (GFP) under the control of the promoter from...
Your friend decides to place Green Fluorescent Protein (GFP)
under the control of the promoter from the lacZ gene we discussed
in class. She put this expression plasmid into a bacterium. The
promoter from the lacZ gene is diagrammed to the right.?
2) Your friend decides to place Green Fluorescent Protein (GFP) under the control of the promoter from the lacZ gene we discussed in class. She put this expression plasmid into a bacterium. The promoter from the lacZ gene...
If a disorder is caused by a single gene, can one conclude that only one phenotype...
If a disorder is caused by a single gene, can one conclude that only one phenotype will manifest? Why or why not? Support your answer.
In mammals, the action of modifying gene expression in which one X chromosome is inactivated in...
In mammals, the action of modifying gene expression in which one X chromosome is inactivated in the cell of females differs from how miRNA performs gene silencing in that A. miRNA blocks transcription factors. B. miRNA is a method of posttranscriptional gene silencing. C. miRNA modifies histones on DNA. D. miRNA methylates acetyl groups to repress translation.
Part 1. Eukaryotes use at least two distinct mechanisms to control gene expression by altering the...
Part 1. Eukaryotes use at least two distinct mechanisms to control gene expression by altering the structure of chromatin around a particular gene. One of these mechanisms is the covalent modification of histones to switch DNA between an open and closed confirmation. A second mechanism is the covalent modification of DNA (typically on cytosines) by methylation. A. Describe a type of histone modification and explain what effect is has on chromatin, and how that effect is achieved. a. One type...
In eukaryotic cells, there are specific transcription factors (activators) that regulate gene expression. Describe the organization...
In eukaryotic cells, there are specific transcription factors (activators) that regulate gene expression. Describe the organization of eukaryotic genes (i.e. promoters/enhancers) and how transcription factors are able to control gene expression and enzyme activity. a) Throughout the course we discussed the enzyme lactase and how it is differently regulated (and therefore expressed) in different human populations. Describe how this gene is differently expressed in different populations and when this/these change(s) are predicted to have taken place. b) Differential gene expression...
Changes in protein expression can alter gene function since: High levels of protein mean that the...
Changes in protein expression can alter gene function since: High levels of protein mean that the protein can sustain mutations more readily without any harm to the cell. The cell responds only to high levels of protein. Changes in expression can alter regulatory networks. Low levels of protein mean that the protein can sustain mutations more readily without any harm to the cell. The mutations found in the CF gene that result in cystic fibrosis are recessive because: The CF...
9) In your own words, explain how gene expression can be regulated by miRNAs. Choose a...
9) In your own words, explain how gene expression can be regulated by miRNAs. Choose a gene of your choice and explain how miRNAs could be used to elucidate its function. Include your hypothesis and expected results from your proposed experiment (10 points). aculated by mininas, Choose asene of your
Please answer these 3 questions please.
During an infection: One B cell can make more than two different antibodies, provided that they recognize the same antigen Each B-cell produces antibodies to a variety of antigens A variety of antibodies are produced by many B cells, but each B cell only produces one type of antibody The same type of antibody is produced by many B cells Bicoid is important for generation of the anterior-posterior axis by regulating expression of multiple...
Your friend decides to place Green Fluorescent Protein (GFP)
under the control of the promoter from the lacZ gene we discussed
in class. She put this expression plasmid into a bacterium. The
promoter from the lacZ gene is diagrammed to the right.?
2) Your friend decides to place Green Fluorescent Protein (GFP) under the control of the promoter from the lacZ gene we discussed in class. She put this expression plasmid into a bacterium. The promoter from the lacZ gene...
Part 1. Eukaryotes use at least two distinct mechanisms to control gene expression by altering the structure of chromatin around a particular gene. One of these mechanisms is the covalent modification of histones to switch DNA between an open and closed confirmation. A second mechanism is the covalent modification of DNA (typically on cytosines) by methylation. A. Describe a type of histone modification and explain what effect is has on chromatin, and how that effect is achieved. a. One type...
9) In your own words, explain how gene expression can be regulated by miRNAs. Choose a gene of your choice and explain how miRNAs could be used to elucidate its function. Include your hypothesis and expected results from your proposed experiment (10 points). aculated by mininas, Choose asene of your
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