BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Textbook Question
Chapter 15, Problem 5A
The codon CCA could be mutated to produce
a. a silent mutation.
b. a codon for Lys.
c. a stop codon.
d. Both a and b are correct.
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Students have asked these similar questions
The change of a UAC codon (Tyr) to a UAU codon (Tyr) is an example of a:
A.
missense mutation
B.
silent mutation
C.
frameshift mutation
D.
nonsense mutation
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 mutations is likely to be the least harmful?
A. A +1 frameshift mutation
B. A +3 frameshift mutation
C. A - 5 frameshift mutation
D. A -1 frameshift mutation
E. A point mutation in the first position of the codon
Chapter 15 Solutions
BIOLOGY
Ch. 15.1 - Prob. 1LOCh. 15.1 - Prob. 2LOCh. 15.1 - List the roles played by RNA in gene expression.Ch. 15.2 - Prob. 1LOCh. 15.2 - Describe the characteristics of the genetic code.Ch. 15.2 - Prob. 3LOCh. 15.3 - Prob. 1LOCh. 15.3 - Differentiate among initiation, elongation, and...Ch. 15.3 - Prob. 3LOCh. 15.4 - Prob. 1LO
Ch. 15.4 - Prob. 2LOCh. 15.4 - Explain the differences between bacterial and...Ch. 15.5 - Prob. 1LOCh. 15.5 - Prob. 2LOCh. 15.5 - Prob. 3LOCh. 15.6 - Explain why the tRNA charging reaction is critical...Ch. 15.6 - Prob. 2LOCh. 15.7 - Prob. 1LOCh. 15.7 - Prob. 2LOCh. 15.7 - Compare translation on the RER and in the...Ch. 15.9 - Prob. 1LOCh. 15.9 - Explain the nature of triplet repeat expansion.Ch. 15.9 - Prob. 3LOCh. 15 - Prob. 1DACh. 15 - Prob. 2DACh. 15 - Prob. 1IQCh. 15 - Prob. 2IQCh. 15 - Prob. 3IQCh. 15 - The experiments with nutritional mutants in...Ch. 15 - What is the central dogma of molecular biology? a....Ch. 15 - In the genetic code, one codon a. consists of...Ch. 15 - Eukaryotic transcription differs from prokaryotic...Ch. 15 - An anticodon would be found on which of the...Ch. 15 - RNA polymerase binds to a ________ to initiate...Ch. 15 - During translation, the codon in mRNA is actually...Ch. 15 - You have mutants that all affect the same...Ch. 15 - The splicing process a. occurs in prokaryotes. b....Ch. 15 - The enzyme that forms peptide bonds is called...Ch. 15 - In comparing gene expression in prokaryotes and...Ch. 15 - The codon CCA could be mutated to produce a. a...Ch. 15 - An inversion will a. necessarily cause a mutant...Ch. 15 - What is the relationship between mutations and...Ch. 15 - Prob. 1SCh. 15 - Frameshift mutations often result in truncated...Ch. 15 - Describe how each of the following mutations will...Ch. 15 - There are a number of features that are unique 10...
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- A mutation occurs that alters the third base in an mRNA codon from a C to a G. This mutation is most likely a A. frameshift mutation B. missense mutation C. nonsense mutation D. silent mutationarrow_forwardThe change of a UAC codon (Tyr) to a UAG codon (Stop) is an example of a: A. nonsense mutation B. frameshift mutation C. silent mutation D. missense mutationarrow_forwardWhich mutation changes a normal codon to another codon specifying the same amino acid a. directed b. missense C. reverse d. nonsense e. silent O a. a O b. b O C. C O d. d O e. earrow_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_forwardThe codons CCU, CCC, CCA, and CCG all code for the amino acid threonine. This is because the genetic code is a,b,c,d, or e? a. generic b. faulty c. reducible d. redundant e. All of the answers are correctarrow_forwardA codon is: a. An alternative name for gene b. Three amino acids that encode a nucleotide c. Three nucleotides that encode an amino acid d. One of three nucleotides that encode and amino acidarrow_forward
- Which of the following describes the interactions between a codon and an anticodon? A. A codon and an anticodon become covalently bonded together due to the activity of the ribosome. B. A codon and anticodon do not come into direct contact because codons are in the nucleus but anticodons are in the cytoplasm. C. A codon and anticodon are attracted to each other due to hydrogen bonding. D. A codon and an anticodon are linked together by an amino acid. ..arrow_forwardA missense mutation is a mutation in which: a. one nucleotide in a codon is changed, but the codon specifies the same amino acid b. a codon is deleted from a gene C. one nucleotide in a codon is changed, and the codon now specifies a different amino acid d. one nucleotide in a codon is changed, and the codon is now a stop codon rather than specifying an amino acid е. a truncated protein is produced by translationarrow_forwardA codon is supposed to be 5'-UGG-3', but a mutation causes it be 5'-UAG-3'. Which one of the following descriptions of this mutation is incorrect? a. Missense b. Point mutation c. Transition d. Nonsensearrow_forward
- A SNV mutation that results in an early stop codon is called: A. silent mutation B. silencing mutation C. missense mutation D. nonsense mutation E. frameshift mutationarrow_forwardWhich of the following mutations is most likely to cause a single amino acid difference during the translation of mRNA into protein? A. Single base-pair insertion B. Single base-pair deletion C. Mutations in regulatory sites D. Base-pair substitutionarrow_forwardThe codon and anticodon are base-paired together during the process of translation. Which of the following is correct regarding the relationship between anticodon and codon? A. The tRNA anticodon UCU pairs with the AGA mRNA codon. B. The tRNA anticodon is read from the 5’ to the 3’ end. C. A tRNA anticodon can pair with only one mRNA codon. D. The mRNA codon ACG base pairs with the tRNA anticodon TGC.arrow_forward
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