Genetics: Analysis and Principles
6th Edition
ISBN: 9781259616020
Author: Robert J. Brooker Professor Dr.
Publisher: McGraw-Hill Education
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Chapter 17.5, Problem 3COMQ
Which of the following is a function of the piRISC?
a. Inhibits transcription of TEs
b. Causes the degradation of TE RNA
c. Causes chromosome breakage
d. Both a and b
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Which of the following is a function of the piRISC?a. Inhibits transcription of TEsb. Causes the degradation of TE RNAc. Causes chromosome breakaged. Both a and b are functions of the piRISC.
Which of the following is true of reverse transcriptase?a. It is required for the movement of DNA transposons.b. It catalyzes the synthesis of DNA from RNA.c. It is required for the transposition of retrotransposons.d. b and c are correct.
What is the difference between the core promoter and the regulatory promoter?
a. Only the core promoter has consensus sequences.
b. The regulatory promoter is farther upstream of the gene.
c. General transcription factors bind to the core promoter; transcriptional activator proteins bind to the regulatory promoter.
d. Both b and c.
Chapter 17 Solutions
Genetics: Analysis and Principles
Ch. 17.1 - Which of the following can bind to ncRNAs? a. DNA...Ch. 17.1 - 2. When an ncRNA functions as a decoy, it
a....Ch. 17.1 - Prob. 3COMQCh. 17.2 - 1. Which of the following functions does HOTAIR...Ch. 17.3 - 1. The process of RNA interference may lead to
a....Ch. 17.3 - 2. In catalyzing the methylation or...Ch. 17.4 - 1. Which of the following is a function of SRP?...Ch. 17.5 - 1. Which of the following components are needed...Ch. 17.5 - 2. In the CRISPR-Cas system, what does the...Ch. 17.5 - Which of the following is a function of the...
Ch. 17.6 - Prob. 1COMQCh. 17.6 - Let's suppose that the overexpression of a...Ch. 17 - 1. List and briefly describe four types of...Ch. 17 - 2. An ncRNA may have the following functions:...Ch. 17 - 3. What is meant by the term RNA world? Describe...Ch. 17 - Explain how HOTAIR plays a role in the...Ch. 17 - What is the phenomenon of RNA interference (RNAi)?...Ch. 17 - With regard to RNAi, what are three possible...Ch. 17 - 7. What is the difference between an miRNA and an...Ch. 17 - Together with a specific set of proteins, snoRNAs...Ch. 17 - Describe the structure of SRP in eukaryotes, and...Ch. 17 - Look at Figure 17.6 and predict what would happen...Ch. 17 - Compare and contrast the roles of crRNA and...Ch. 17 - In the CRISPR-Cas system, does the tracrRNA act as...Ch. 17 - Prob. 13CONQCh. 17 - Outline the steps that occur when piRISCs silence...Ch. 17 - List five types of cancer in which ncRNAs can be...Ch. 17 - Prob. 16CONQCh. 17 - A protein called trypsin, which plays a role in...Ch. 17 - Prob. 2EQCh. 17 - Prob. 3EQCh. 17 - As described in Chapter 21, the CRISPR-Cas system...Ch. 17 - Prob. 5EQCh. 17 - Prob. 6EQCh. 17 - Prob. 1QSDCCh. 17 - Go to the PubMed website and do a search using the...
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- A promoter is ______. a. a specific sequence of DNA nucleotides b. a specific sequence of RNA nucleotides c. a protein that binds to DNA d. an enzyme that synthesizes RNAarrow_forwardWhich of the following is an example of positive control? (a) transcription occurs when a repressor binds to an inducer (b) transcription cannot occur when a repressor binds to a corepressor (c) transcription is stimulated when an activator protein binds to DNA (d) a and b (e) a and carrow_forwardA cell has a mutated mediator protein. a) How will this affect transcription of genes? (circle an answer below) No transcription Weak transcription will occur Strong transcription will occur b) Why? Describe your choice abovearrow_forward
- a) What is a gene promoter? b) What proteins bind to a promoter? c) What do those proteins do to control gene expression?arrow_forwardTranscription factors a. help the RNA polymerase bind DNA b. are involved in chromatin remodeling, uncoil the DNA c. modulate transcription from the distance d. add the 5’ CAP to the RNAarrow_forwardInsulators may exert their effect by a. acting as a barrier to changes in chromatin structure. b. blocking the effects of neighboring enhancers. c. doing both a and b. d. none of the above.arrow_forward
- What is the advantage of using the neo gene to disrupt the function of a gene in knockout mice? a. The neo gene produces an antibiotic that kills unwanted cells. b. The neo gene is the right size for disabling other genes. c. The neo gene provides a selectable marker for finding cells that contain the disabled gene. d. The neo gene produces a toxin that inhibits transcription of the target genearrow_forwardProteins that influence RNA synthesis by binding directly to DNA are called_____ . a. promoters c. operators b. transcription factors d. enhancersarrow_forwardWhich of the following is/are a role for the poly-A tail? (Select all that apply.) a) Facilitates transport of the transcript out of the nucleus b) Confers stability to the mRNA c) Binds to RNA polymerase to initiate transcription d) Facilitates binding to DNAarrow_forward
- Which of the following is true about chromodomains? a) bind methylated histone tails b) are associated with repression c) both a and b d) none of the abovearrow_forwardIn gene silencing, the “dicer” enzymea. assembles siRNAs into a RISC complex.b. unwinds the RISC complex.c. binds siRNA to mRNA sequences complementary to it.d. slices up double-stranded RNA moleculesarrow_forwardIn the table below the product of gene R binds to the promoter of gene A. What happens in (b)? a. Mutant protein A produced b. No Protein A produced c. No protein C produced d. No protein R producedarrow_forward
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