Genetics: Analysis and Principles
6th Edition
ISBN: 9781259616020
Author: Robert J. Brooker Professor Dr.
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 12.2, Problem 4COMQ
A uracil-rich sequence occurs at the end of the RNA in
a. ρ-dependent termination.
b. ρ-independent termination.
c. both a and b.
d. none of the above.
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Check out a sample textbook solutionStudents have asked these similar questions
There are 61 mRNA codons that specify an amino acid, but only 45 tRNAs. This is best explained by the fact that
A. some tRNAs have anticodons that recognize two or more different codons.
B. the rules for base pairing between the third base of a codon and tRNA are flexible.
C. many codons are never used, so the tRNAs that recognize them are dispensable.
D. A and B only
E. A, B, and C
Which of the following is NOT a component of the 30S initiation complex?
A. EF-Tu and EF-Ts
B. f-met-tRNA
C. initiation factors
D. mRNA
Although the specific mechanism of RNA interference has not been fully defined, it involves
A. the inactivation of MRNA
B. RNA interference with DNA.
O c. DNA interference with MRNA.
D. MRNA interference with rRNA
Chapter 12 Solutions
Genetics: Analysis and Principles
Ch. 12.1 - 1. Which of the following base sequences is used...Ch. 12.1 - Prob. 2COMQCh. 12.2 - With regard to a promoter, a transcriptional start...Ch. 12.2 - Prob. 2COMQCh. 12.2 - 3. Sigma factor is needed during which stage(s) of...Ch. 12.2 - A uracil-rich sequence occurs at the end of the...Ch. 12.3 - Which RNA polymerase in eukaryotes is responsible...Ch. 12.3 - Prob. 2COMQCh. 12.3 - Prob. 3COMQCh. 12.3 - Prob. 4COMQ
Ch. 12.4 - Which of the following are examples of RNA...Ch. 12.4 - A ribozyme is a. a complex between RNA and a...Ch. 12.4 - Prob. 3COMQCh. 12.4 - Prob. 4COMQCh. 12.5 - 1. Which of the following is not a key difference...Ch. 12 - Prob. 1CONQCh. 12 - Prob. 2CONQCh. 12 - Prob. 3CONQCh. 12 - Prob. 4CONQCh. 12 - 5. Mutations in bacterial promoters may increase...Ch. 12 - Prob. 6CONQCh. 12 - 7. In Chapter 9, we considered the dimensions of...Ch. 12 - 8. A mutation within a gene sequence changes the...Ch. 12 - Prob. 9CONQCh. 12 - At the molecular level, describe how factor...Ch. 12 - Prob. 11CONQCh. 12 - What is the complementarity rule that governs the...Ch. 12 - 13. Describe the movement of the open complex...Ch. 12 - 14. Describe what happens to the chemical bonding...Ch. 12 - Prob. 15CONQCh. 12 - Prob. 16CONQCh. 12 - Prob. 17CONQCh. 12 - Mutations that occur at the end of a gene may...Ch. 12 - If the following RNA polymerases were missing from...Ch. 12 - 20. What sequence elements are found within the...Ch. 12 - 21. For each of the following transcription...Ch. 12 - 22. Describe the allosteric and torpedo models for...Ch. 12 - Which eukaryotic transcription factor(s) shown in...Ch. 12 - 24. The initiation phase of eukaryotic...Ch. 12 - A eukaryotic protein-encoding gene contains two...Ch. 12 - 26. Describe the processing events that occur...Ch. 12 - Prob. 27CONQCh. 12 - Prob. 28CONQCh. 12 - Prob. 29CONQCh. 12 - Prob. 30CONQCh. 12 - 31. In eukaryotes, what types of modifications...Ch. 12 - Prob. 32CONQCh. 12 - Prob. 33CONQCh. 12 - 34. Figure 12.21 shows the products of alternative...Ch. 12 - 35. The processing of ribosomal RNA in eukaryotes...Ch. 12 - Prob. 36CONQCh. 12 - Prob. 37CONQCh. 12 - After the intron (which is in a lariat...Ch. 12 - Prob. 1EQCh. 12 - 2. Chapter 21 describes a technique known as...Ch. 12 - Prob. 3EQCh. 12 - As described in Chapter 21 and in experimental...Ch. 12 - Prob. 5EQCh. 12 - Prob. 6EQCh. 12 - 1. Based on your knowledge of introns and pre-mRNA...Ch. 12 - Discuss the types of RNA transcripts and the...
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- The anticodon of a tRNA is located in the a. 3′ single-stranded region of the acceptor stem. b. loop of the first stem-loop. c. loop of the second stem-loop. d. loop of the third stem-loop.arrow_forwardWhich of the following is a function of the 7-methylguanosine cap? a. Exit of mRNA from the nucleus b. Efficient splicing of pre-mRNA c. Initiation of translation d. All of the abovearrow_forwardWhich of the following are elongation factors involved in the release of free tRNAs? a.EF-G b.EF-Ts c.EF-Tu d.EF-Parrow_forward
- Which of the following arms of t-RNA is required for recognition of the t-RNA by its proper aminoacyl t-RNA synthetase? a. Anti-codon arm b. T(psi)C arm c. D arm d. Acceptor armarrow_forwardWhat is an example of a post translational modification? a. Poly (a) tail b. 5' capping c. Removal of introns d. All of the abovearrow_forwardWhich of the following mutations would have the greatest negative impact on the protein product of a gene? A. a single base deletion close to the end of the coding region of a gene. B. a single base insertion near the start of the coding region of the gene C. a base-pair substitution D. a deletion of three bases near the middle of the genearrow_forward
- Which of the following would probably cause the most severe damage to a gene's expression and phenotype a. A missense mutation changing the first methionine codon to an arginine codon. b. A deletion of a base in the 455th codon of a 456-amino acid protein. c. Alteration of a UGG codon to a UGA codon at position 324 of a 324 amino acid protein. d. Mutation of a GUC codon (valine) to a GUU codon (valine).arrow_forwardWhich of the following is an RNA processing event that increases the number of potential polypeptides that can be encoded by a single gene. a. transcription b. alternative splicing c. alternative transcription d. polyadenylationarrow_forwardWhat is the direction of the growth of newly synthesized RNA chain during transcription? options: A. 5'-to-3' direction. B. 3'-to-5' direction. C. Both A and B D. Neither A nor Barrow_forward
- In which of the following does nitrogenous base pairing (base complementarity via hydrogen bonds) NOT play a key, direct role? A. transcription of RNA from a DNA template B. binding of the TATA binding protein to the TATA box C. the RNAi pathway of gene regulation D. Codon-Anticodon recognition in translationarrow_forwardThe effect that allolactose has on LacI is a. causing it to block binding of the CAP protein. b. causing it to change shape so that it cannot bind to DNA. c. causing it to not be expressed anymore. d. causing it to help RNA polymerase to bind.arrow_forwardIn the triplet-binding assay of Nirenberg and Leder, an RNA triplet composed of three bases was able to cause the a. translation of a polypeptide. b. binding of a tRNA carrying the appropriate amino acid. c. termination of translation. d. release of the amino acid from the tRNA.arrow_forward
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