CAMPBELL BIOLOGY:CONCEPTS & CONNECTIONS
3rd Edition
ISBN: 9781323464175
Author: Pearson
Publisher: PEARSON C
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Chapter 10, Problem 6TYK
A geneticist found that a particular mutation had no effect on the polypeptide encoded by a gene. This mutation probably involved
a. deletion of one
b. alteration of the start codon.
c. insertion of one nucleotide.
d. substitution of one nucleotide.
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Finally, imagine that a mutation occurred in the codon below and an A was inserted between the two Ts. How would this affect the mRNA and the amino acid for that codon?
Old DNA codon
Old RNA codon
Old amino acid
New DNA codon
New mRNA codon
New amino acid
T T G
T A T G
This would be an example of which type of a mutation?__________________________
a mutation in dna that adds +1 ot -1 nucleotide or +2 or -2 nucleotides is called a______? (choose one answer only)
A. frameshift mutation
B. silent mutation
C. nonsense mutation
D. missense mutation
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 10 Solutions
CAMPBELL BIOLOGY:CONCEPTS & CONNECTIONS
Ch. 10 - Check your understanding of the flow of genetic...Ch. 10 - Which of the following correctly ranks the...Ch. 10 - Describe the process of DNA replication: the...Ch. 10 - What is the name of the process that produces RNA...Ch. 10 - Scientists have discovered how to put together a...Ch. 10 - A geneticist found that a particular mutation had...Ch. 10 - Describe the process by which the information in a...Ch. 10 - The nucleotide sequence of a DNA codon is GTA. A...Ch. 10 - A cell containing a single chromosome is placed in...Ch. 10 - The base sequence of the gene coding for a short...
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- How do we call the type of point mutation in which an A->U change occurs in the codon for the sixth amino acid in hemoglobin chain b? a) Inversion b) Transversion c) Transition d) Transaminationarrow_forwarda. Give the sequence of mRNA that would be transcribed off of the bottom strand and label its 5' and 3' ends. b. translate this RNA sequence in 1a into a protein sequence c. Give the sequence of mRNA that would be transcribed off of the top strand and label its 5' and 3' ends. d. Translate this RNA sequence in 1c into a protein sequencearrow_forwardWhich type of point mutation does not affect the resulting protein? a deletion b missense mutation c silent mutation d nonsense mutationarrow_forward
- If a mutation deletes the start codon in a eukrayotic gene, which of the following most accurately describes its consequence? A. There will be no mRNA or polypeptide made. B. The mRNA will be made but no polypeptide is made. C. The mRNA will not be processed properly. D. Nothing will happen. It is a silent mutation.arrow_forwardWhat is the genetic code? a. The relationship between a three-base codon sequence and an amino acid or the end of translation b. The entire base sequence of an mRNA molecule c. The entire sequence from the promoter to the terminator of a gene d. The binding of tRNA to mRNAarrow_forwardAddition or deletion of bases causes which kind of mutation? Select one: a. Frameshift mutation b. Transversion c. Transition d. Transcriptionarrow_forward
- _______ are removed from new mRNAs. a. Introns c. Poly-A tails b. Exons d. Amino acidsarrow_forwardWhich of the following best describes mRNA?Group of answer choices a) Complexes with ribosomal proteins to form ribosomes b) Transports amino acids to ribosomes during translation c) Provides the instructions for the amino acid sequence of a polypeptide d) Used for eukaryotic RNA processingarrow_forwardImagine that a mutation in a DNA molecule results in the codon CCU being changed to CCC. Both of these codons code for proline. The fact that more than one codon can code for the same amino acid is referred to as ___ a. the ambiguity of the genetic code b. the redundancy of the genetic code c. the randomness of the genetic code d. mutations in the genetic codearrow_forward
- What is the role of transcription in the determination of the amino acid sequence of a polypeptide chain? A. It pairs anticodons and codons. B. It synthesizes an mRNA strand. C. It duplicates the information in DNA. D. It decodes the information from mRNA.arrow_forwardWhich of the following best describes tRNA? a. Provides the instructions for the amino acid sequence of a polypeptide b. Complexes with ribosomal proteins to form ribosomes c. Used for eukaryotic RNA processing d. Transports amino acids to ribosomes during translationarrow_forwardUse your genetic code (codon) table to answer the next two questions: What type of mutation would result if the sequence of a gene were altered so that the sequence of the mRNA was changed from: AUGCCGUGCAGUAAC to AUGCCAUGCAGUAAC A) a silent mutation B) a nonsense mutation C) a frame-shift mutation D) a missense mutation E) a base insertion mutationarrow_forward
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