Concepts of Genetics (12th Edition)
12th Edition
ISBN: 9780134604718
Author: William S. Klug, Michael R. Cummings, Charlotte A. Spencer, Michael A. Palladino, Darrell Killian
Publisher: PEARSON
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Textbook Question
Chapter 14, Problem 10PDQ
What are isoaccepting tRNAs? Assuming that there are only 20 different aminoacyl tRNA synthetases but 31 different tRNAs, speculate on parameters that might be used to ensure that each charged tRNA has received the correct amino acid.
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What are the amino acids carried by tRNAs if their anticodons are either
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The following triplets constitute anticodons found on a series of tRNAs. Name the amino acid carried by each of these tRNAs.
a. 5′ –UUU–3′
b. 5′ –GAC–3′
c. 5′ –UUG–3′
d. 5′ –CAG–3′
Chapter 14 Solutions
Concepts of Genetics (12th Edition)
Ch. 14 - Prob. 1NSTCh. 14 - A series of mutations in the bacterium Salmonella...Ch. 14 - HbS results from the substitution of valine for...Ch. 14 - Given that a faulty ribosomal protein is the...Ch. 14 - A couple with a child affected with DBA undergoes...Ch. 14 - Prob. 3CSCh. 14 - HOW DO WE KNOW? In this chapter, we focused on the...Ch. 14 - CONCEPT QUESTION Review the Chapter Concepts list...Ch. 14 - Contrast the roles of tRNA and mRNA during...Ch. 14 - Francis Crick proposed the adaptor hypothesis for...
Ch. 14 - During translation, what molecule bears the codon?...Ch. 14 - The chain of eukaryotic hemoglobin is composed of...Ch. 14 - Assuming that each nucleotide in an mRNA is 0.34...Ch. 14 - Summarize the steps involved in charging tRNAs...Ch. 14 - To carry out its role, each transfer RNA requires...Ch. 14 - What are isoaccepting tRNAs? Assuming that there...Ch. 14 - When a codon in an mRNA with the sequence 5-UAA-3...Ch. 14 - Discuss the potential difficulties of designing a...Ch. 14 - Prob. 13PDQCh. 14 - Prob. 14PDQCh. 14 - The synthesis of flower pigments is known to be...Ch. 14 - The study of biochemical mutants in organisms such...Ch. 14 - Explain why the one-gene: one-enzyme concept is...Ch. 14 - Why is an alteration of electrophoretic mobility...Ch. 14 - Prob. 19PDQCh. 14 - Prob. 20PDQCh. 14 - Prob. 21PDQCh. 14 - Prob. 22PDQCh. 14 - Several amino acid substitutions in the and ...Ch. 14 - Define and compare the four levels of protein...Ch. 14 - What are the two common types of protein secondary...Ch. 14 - How do covalent disulfide bonds, hydrogen bonds...Ch. 14 - Prob. 27PDQCh. 14 - List three different types of posttranslational...Ch. 14 - Prob. 29PDQCh. 14 - How does an enzyme function? Why are enzymes...Ch. 14 - Prob. 31PDQCh. 14 - Three independently assorting genes (A, B, and C)...Ch. 14 - How would the results vary in cross (a) of Problem...Ch. 14 - Deep in a previously unexplored South American...Ch. 14 - Many antibiotics are effective as drugs to fight...Ch. 14 - The flow of genetic information from DNA to...Ch. 14 - Prob. 37ESP
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- The wobble rules for tRNA-mRNA pairing are shown. If we assume that the tRNAs do not containmodified bases, what is the minimum number of tRNAs needed to recognize the codons for the following types of amino acids? A. Leucine B. Methionine C. Serinearrow_forwardIn the tertiary structure of tRNA, where is the anticodon region relative to the attachment site for the amino acid? Are these located adjacent to each other?arrow_forwardAre tRNAfmet and tRNAmet made from the same aminoacyl tRNA synthetase?arrow_forward
- For the anticodon sequences 5' IAA and 5' xm^3s^2UAA, considering the DNA sequences of the genes encoding the tRNAs(assuming both tRNAs exist even if that is not true), What is the sequence of the RNA-like strand of each tRNA gene that corresponds to the tRNA's anticodon? be sure to indicate polarities.arrow_forwardWhat is an anticodon and where is it located on the tRNA structure?arrow_forwardWhich anticodon would you predict for a tRNA speciescarrying isoleucine? Is there more than one possible answer? If so, state any alternative answers.arrow_forward
- Although aminoacyl-tRNA synthetases make few errors, occasionally an error does occur. How can these errors be detected and corrected?arrow_forwardFrom this overall anticodon sequence in tRNA, 3'-CAUCGGAAUAGAUCGCUAGUGGCAGGCAUAAUGAUCACCGGUCUGAGAAAAGUGGUACAUAUCAAC-5' Using ONE-letter amino acid code starting from N-terminus to C-terminus, what is the amino acid sequence that will be coded for?arrow_forwardWhy is it important for all tRNAs to have similar structures?arrow_forward
- What features of tRNA structure are involved in recognition and amino acylation by an aaRS?arrow_forwardIf a tRNA molecule carries a glutamic acid, what are the two possible anticodon sequences that it could contain? Be specific about the 5′ and 3′ ends.arrow_forwardThe protein Xpot transports tRNAs out of the nucleus so that they can be aminoacylated in the cytosol. (a) What tRNA structural features is Xpot likely to recognize? (b) How does Xpot distinguish mature tRNAs from pre-tRNAs?arrow_forward
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