Campbell Essential Biology (7th Edition)
7th Edition
ISBN: 9780134765037
Author: Eric J. Simon, Jean L. Dickey, Jane B. Reece
Publisher: PEARSON
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Chapter 10, Problem 8SQ
Summary Introduction
Introduction:
“Mutation” is a phenomenon which causes a change in the
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A genetic researcher notices that individuals with a particular genetic disease have a shortened version of key protein involved in the diseased biochemical pathway. Which of the following mutations is most likely to result in the premature termination of protein synthesis?
A. The disease is caused by a silent mutation.
B. The disease is caused by a frameshift mutation.
C. The disease is caused by a missense mutation.
D. The disease is caused by a nonsense mutation.
Which type of point mutation does not affect the resulting protein?
a
deletion
b
missense mutation
c
silent mutation
d
nonsense mutation
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?__________________________
Chapter 10 Solutions
Campbell Essential Biology (7th Edition)
Ch. 10 - A molecule of DNA contains two polymer strands...Ch. 10 - Name the three parts of every nucleotide.Ch. 10 - List these terms in order of size from largest to...Ch. 10 - A scientist inserts a radioactively labeled DNA...Ch. 10 - The nucleotide sequence of a DNA codon is GTA....Ch. 10 - Describe the process by which the information is a...Ch. 10 - Match the following molecules with the cellular...Ch. 10 - Prob. 8SQCh. 10 - Prob. 9SQCh. 10 - How do some viruses reproduce without ever having...
Ch. 10 - HIV requires an enzyme called _____ to convert its...Ch. 10 - Nearly every organism on Earth shares the...Ch. 10 - Prob. 13IMTCh. 10 - Genes carry the instructions needed to build an...Ch. 10 - A cell containing a single chromosome is placed in...Ch. 10 - In a classic 1952 experiment, biologists Alfred...Ch. 10 - Interpreting Data The graph shows the number of...Ch. 10 - Scientists at the National Institutes of Health...Ch. 10 - Prob. 19BSCh. 10 - Flu vaccines have been shown to be safe, are very...
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- 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 codonarrow_forwardMissense mutations a create premature stop codons b cause no change in a gene product c change the amino acid sequence of a polypeptide d none of the abovearrow_forwardIf 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_forward
- What 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_forwardHow 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_forward_______ are removed from new mRNAs. a. Introns c. Poly-A tails b. Exons d. Amino acidsarrow_forward
- Which 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_forwardAddition or deletion of bases causes which kind of mutation? Select one: a. Frameshift mutation b. Transversion c. Transition d. Transcriptionarrow_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_forward
- The anticodon … A. is complementary to the mRNA B. is found on the ribosome C. is found on the tRNA D. A and Carrow_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_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
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