Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Chapter 21.4, Problem 1BC
Summary Introduction
To analyze: The codons representing different amino acids and propose a change that results in a silent mutation.
Introduction:
A codon is a sequence of three DNA or RNA
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Where are silent mutations more likely to happen?
Group of answer choices
in position 1 of the codon
in position 3 of the codon
in position 1 of the anticodon
in position 3 of the anticodon
in position 1 of the codon and position 3 of the anticodon with the same likelihood
in position 3 of the codon and position 1 of the anticodon with the same likelihood
Use the information uploaded in the picture to help with this question.
Would you conclude that IP-1383 induces mutations or not? Briefly (one or two sentences) explain how or why you came to your conclusion.
What would happen if a mutation changed a codon for an amino acid to a stop codon? How about if the mutation changed a start codon to some other codon?
Chapter 21 Solutions
Principles of Biology
Ch. 21.1 - Refer back to Figure 4.8. Which of the three...Ch. 21.1 - Prob. 1CCCh. 21.1 - Prob. 1TYKCh. 21.1 - Prob. 2TYKCh. 21.2 - Prob. 1CCCh. 21.2 - Prob. 1TYKCh. 21.2 - Prob. 2CCCh. 21.2 - Prob. 2TYKCh. 21.2 - Prob. 3TYKCh. 21.3 - What shared derived character is common to the...
Ch. 21.3 - Prob. 2CCCh. 21.3 - Prob. 1TYKCh. 21.3 - Prob. 2TYKCh. 21.4 - Prob. 1BCCh. 21.4 - Prob. 1CCCh. 21.4 - Prob. 1TYKCh. 21.4 - An analysis of the number of neutral genetic...Ch. 21.5 - Prob. 1CCCh. 21.5 - Which of the following is an example of horizontal...Ch. 21 - Prob. 1TYCh. 21 - Which of the following is the correct order of the...Ch. 21 - Which type of taxon consists of organisms with the...Ch. 21 - Prob. 4TYCh. 21 - Prob. 5TYCh. 21 - Prob. 6TYCh. 21 - Prob. 7TYCh. 21 - Prob. 8TYCh. 21 - The concept that the preferred hypothesis is (lie...Ch. 21 - Prob. 10TYCh. 21 - Prob. 1CCQCh. 21 - What is a molecular clock? How is it used in...Ch. 21 - Prob. 3CCQCh. 21 - Prob. 1CBQCh. 21 - Prob. 2CBQ
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- In the gene-coding sequence shown here, which of the following events will produce a frameshift after the last mutational site? a. insertion of an A after the first codon b. deletion of the second codon (AAA) c. insertion of TA after the second codon and deletion of CG in the fourth codon d. deletion of AC in the third codonarrow_forwardSuppose that codons consisted of 4 nucleotides instead of 3 and that there were only 2 different bases. How many amino acids could be encoded by this variant of the genetic code?arrow_forwardCreate protein sequence with 10 elements. (Start with a codon and ends with a stop codon)arrow_forward
- Give two DIFFERENT examples of how the following can occur:a. A point mutation in an exon that is silent.b. A point mutation in an exon that is NOT silent.c. A point mutation in an intron that is NOT silent.d. A point mutation in a promoter that is NOT silent.arrow_forwardNow imagine that a mutation occurred in the second T of the codon below and the T became a G. 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 G G This would be an example of which type of a point mutation?__________________________arrow_forwardExplain what is meant by stating that the genetic code is triplet and nonoverlapping? What did the finding that DNA base composition varied greatly among different organisms suggest about the genetic code? How was the identity of the UUU codon established?arrow_forward
- Look at Table 26.3 and find codons for the following amino acids:(a) Val (b) Arg (c) Serarrow_forwardLet’s suppose a researcher mixed together nucleotides with the following percentage of bases: 30% G, 30% C, and 40% A. If RNA was made via polynucleotide phosphorylase, what percentage of the codons would be 5′-GGC-3′? a. 30% b. 9% c. 2.7% d. 0%arrow_forwardUsing the figure below identify: What is a function of introns and exons? What is a role of mobile DNA elements? What is a meaning of simple-sequence DNA?arrow_forward
- explain why a mutation in the dna nucleotide sequence that corresponds to the 3rd nitrogen base in the mrna codon is not as serious as a mutation in the dna that corresponds to the first nitrogen base in the mrna codonarrow_forwardNow imagine that a mutation occurred in the g of the codon below and the G became a C. 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 A T G A T C This would be an example of which type of a point mutation?__________________________arrow_forwardNow imagine that a mutation occurred at the first G in the DNA sequence above and the G became a C. 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 T C This would be an example of which type of a point mutation?__________________________arrow_forward
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