CAMPBELL BIOLOGY IN FOCUS-MOD.MASTERING
3rd Edition
ISBN: 9780135191811
Author: Urry
Publisher: PEARSON
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Chapter 15, Problem 8TYU
SCIENTIFIC INQUIRY
Imagine you want to study one of the mouse crystallins, proteins present in the lens of the eye. Assuming that the gene has been cloned, describe two ways to study its expression in the embryo.
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Would gene chips containing bacterial DNA segments be useful for monitoring gene expression in a mammalian cell?
By whole-exome sequencing, you have identified an early termination mutation in KLHL4 in a human patient with an undiagnosed blood vessel anomaly. There is almost nothing known about the function of this gene, and no existing animal models! To begin to understand its function, you decide to use the zebrafish model.
You first want to know where in the embryo this gene is expressed. Which technique would you use to identify the cell type that expresses klhl4 mRNA in zebrafish embryos?
You find that this gene is expressed in endothelial cells, which line blood vessels. Intrigued by this finding, you next decide to disrupt the gene in zebrafish using CRISPR/Cas9. The DNA sequence that you want to target is below. What is the sequence of your 20-base guide RNA?
5’ TAGCAATTATGCGCGCTAGCAATTGCGTAGGTCATAATGCAGCTGAC 3’
3’ ATCGTTAATACGCGCGATCGTTAACGCATCCAGTATTACGTCGACTG 5’
After injecting the gRNA with Cas9, what are potential outcomes? Enter true or false.…
Homeotic (Hox genes in vertebrates) code for
expression of
that regulate the
OD) Transcription factors, genes that determine segment identity and structure
OC) Poly-A tails, that code for proteins that control muscle differentiation
OE) Transcription factors, genes that control muscle differentiation
OA) Operators, inducible genes coding for enzymes in metabolic pathways
Chapter 15 Solutions
CAMPBELL BIOLOGY IN FOCUS-MOD.MASTERING
Ch. 15.1 - How does binding of the trp corepressor to its...Ch. 15.1 - Describe the binding of RNA polymerase,...Ch. 15.1 - WHAT IF? A certain mutation in E. coli changes the...Ch. 15.2 - Prob. 1CCCh. 15.2 - Compare the roles of general and specific...Ch. 15.2 - Prob. 3CCCh. 15.3 - WHAT IF? Suppose the mRNA being degraded in Figure...Ch. 15.3 - MAKE CONNECTIONS Inactivation of one of the X...Ch. 15.4 - Prob. 1CCCh. 15.4 - WHAT IF? Study the microarray in Figure 15.17. If...
Ch. 15 - If a particular operon encodes enzymes for making...Ch. 15 - The functioning of enhancers is an example of A. a...Ch. 15 - Which of the following is an example of...Ch. 15 - Prob. 4TYUCh. 15 - Prob. 5TYUCh. 15 - Which of the following would not be true of cDNA...Ch. 15 - Prob. 7TYUCh. 15 - SCIENTIFIC INQUIRY Imagine you want to study one...Ch. 15 - FOCUS ON EVOLUTION DNA sequences can act as tape...Ch. 15 - FOCUS ON INTERACTIONS In a short essay (100150...Ch. 15 - Prob. 11TYU
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