Genetics: Analysis and Principles
6th Edition
ISBN: 9781259616020
Author: Robert J. Brooker Professor Dr.
Publisher: McGraw-Hill Education
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Chapter 13, Problem 18CONQ
Summary Introduction
To review:
The necessity of cell to form 61 tRNA (transfer ribonucleic acid) molecules for corresponding 61 codons.
Introduction:
Transfer
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Students have asked these similar questions
Is it necessary for a cell to make 61 different tRNA molecules, correspondingto the 61 codons for amino acids? Explain your answer.
Which of the following statements are true?
Each stop codon also codes for an amino acid
Each codon in mRNA codes for exactly one amino acid
The start codon also codes for an amino acid
Each TRNA will base pair with only one codon
There are multiple codons possible for nearly all amino acids
Each TRNA carries exactly one type of amino acid
Each anticodon in tRNA pairs with exactly one codon
Each codon in TRNA codes for exactly one amino acid
Below is the 5’–3’ strand of a double-stranded DNA molecule with the following nucleotide sequences:5’ C C T A T G C A G T G G C C A T A T T C C A A A G C A T A G C 3’
1. If the RNA synthesized above (item #1) is a functional mRNA and all the nucleotides belong to an exon,a. how many codons are present in this mRNA?b. how many codons actually code for proteins in this mRNA?c. what stop codon is present in this mRNA?
Chapter 13 Solutions
Genetics: Analysis and Principles
Ch. 13.1 - Prob. 1COMQCh. 13.1 - 2. The reason why Beadle and Tatum observed four...Ch. 13.2 - What is the genetic code? a. The relationship...Ch. 13.2 - Prob. 2COMQCh. 13.2 - The fourth codon in an mRNA sequence is GGG, which...Ch. 13.2 - Prob. 4COMQCh. 13.3 - Prob. 2COMQCh. 13.4 - Prob. 1COMQCh. 13.4 - 2. The anticodon of a tRNA is located in the
a....Ch. 13.4 - An enzyme known as _______attaches an amino acid...
Ch. 13.5 - Each ribosomal subunit is composed of a. multiple...Ch. 13.5 - Prob. 2COMQCh. 13.6 - 1. During the initiation stage of translation in...Ch. 13.6 - The Kozak rules determine a. the choice of the...Ch. 13.6 - During the peptidyl transfer reaction, the...Ch. 13.6 - A release factor is referred to as a molecular...Ch. 13 - Prob. 1CONQCh. 13 - What does it mean when we say that the genetic...Ch. 13 - According to the adaptor hypothesis, is each of...Ch. 13 - Prob. 4CONQCh. 13 - Prob. 5CONQCh. 13 - 6. The wobble rules for tRNA-mRNA pairing are...Ch. 13 - Prob. 7CONQCh. 13 - Prob. 8CONQCh. 13 - Prob. 9CONQCh. 13 - If a tRNA has an anticodon sequence 3CCI5, what...Ch. 13 - Describe the anticodon of a single tRNA that could...Ch. 13 - Prob. 12CONQCh. 13 - Prob. 13CONQCh. 13 - 14. What is the role of aminoacyl-tRNA synthetase?...Ch. 13 - Prob. 15CONQCh. 13 - 16. Discuss the significance of modified bases...Ch. 13 - How and when does formylmethionine become attached...Ch. 13 - Prob. 18CONQCh. 13 - Prob. 19CONQCh. 13 - Prob. 20CONQCh. 13 - The term subunit can be used in a variety of ways....Ch. 13 - 22. Do the following events during bacterial...Ch. 13 - 23. What are the three stages of translation?...Ch. 13 - Prob. 24CONQCh. 13 - 25. For each of the following initiation factors,...Ch. 13 - Prob. 26CONQCh. 13 - 27. For each of the following sequences, rank them...Ch. 13 - Prob. 28CONQCh. 13 - Prob. 29CONQCh. 13 - Prob. 30CONQCh. 13 - Prob. 31CONQCh. 13 - In which of the ribosomal sites, the A site, P...Ch. 13 - Prob. 33CONQCh. 13 - Prob. 34CONQCh. 13 - Prob. 35CONQCh. 13 - Prob. 36CONQCh. 13 - Prob. 37CONQCh. 13 - 1. In the experiment of Figure 13.7, what would be...Ch. 13 - 2. Polypeptides can be translated in vitro. Would...Ch. 13 - Discuss how the elucidation of the structure of...Ch. 13 - Describe the structure of a polysome, which is...Ch. 13 - Prob. 5EQCh. 13 - 6. The technique of Western blotting is described...Ch. 13 - The protein known as tyrosinase is needed to make...Ch. 13 - Prob. 8EQCh. 13 - Discuss why you think the ribosomes need to...Ch. 13 - 2. Discuss and make a list of the similarities...Ch. 13 - 3. Which events during translation involve...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- If there are 64 codons, how can there be fewer than 64 tRNA molecules?arrow_forwardWhich of the following mRNA codons could be changed to a stop codon by a single base pair substitution in DNA ? [In other words, if you substitute one of the bases for a diferent one, it will produce a stop codon. Don't overthink this. Just look at the codon as written, and see if changing any one base leads to a stop codon]. 1. UAC (tyrosine) 2. UGG (tryptophan) 3. CGA (arginine) 4. ACU (threonine) A. 1, 2 and 3 B. 1 and 3 C. 2 and 4 D. 4 only E. All of 1, 2, 3 and 4 are correctarrow_forwardBelow is the 5’–3’ strand of a double-stranded DNA molecule with the following nucleotide sequences:5’ C C T A T G C A G T G G C C A T A T T C C A A A G C A T A G C 3’ 1. If the RNA synthesized above (item #3) is a functional mRNA and all the nucleotides belong to an exon,a. how many codons are present in this mRNA?b. how many codons actually code for a protein in this mRNA?c. what stop codon is present in this mRNA?arrow_forward
- DNA gene TAC AGC TTT mRNA codon (No thymine in RNA!) tRNA anticodon (No thymine in RNA!) Amino acid Use the mRNA with the Genetic Code. Use the mRNA with the Genetic Code. Answer the questions below. Questions How many nucleotides would be needed to code for a protein that has 100 amino acids? Using the Genetic Code in Table 6.3, write all of the possible codons that signal the start and end of a gene. Start: End: An amino acid sequence of a protein molecule includes methionine, lysine, serine and glycine. Show each different codon that could result in each of these amino acids. You will have more than one codon for all of them except methionine. Amino Acids All Possible Codons Methionine Lysine Serine (Look carefully. There are six possibilities) Glycine Question 3 illustrates the redundant nature of the genetic code. Can you think of an advantage of having several codons that all code for the…arrow_forwardAmino acids are translated from mRNA codons and each codon is made up of three nucleotide bases. How might an extra single base INSERTION into the second codon of a coding sequence of a gene affect the amino acid sequence of the protein encoded by the gene? (Hint: You may want to write out a made-up example of an insertion like the one described above) The entire amino acid sequence would shift and be changed. O A single amino acid would change only. O The mutation may have no effect on the amino acid sequence. O A single extra amino acid would be present in the protein. O All of the above are possible outcomes.arrow_forwardWhat is the MINIMUM number of tRNA's needed to recognize all of the codons for glutamate (Glu)?Question 31 options: A) One B) Two C) Three D) Four E) Sixarrow_forward
- Use this genetic code table for some of the questions ahead. You do not need to memorize the code, except for the start codon (AUG = Met) and the stop codons (UAA, UAG, UGA). Which of the following statements about the genetic code is correct? A) All codons specify more than one amino acid. B) The genetic code is redundant. C) All amino acids are specified by more than one codon. D) All codons specify an amino acid.arrow_forwardIf DNA codes for mRNA and mRNA codes for protein, then how can the same DNA sequence generate different proteins? What are the 3 tRNA sites on the small ribosomal subunit (just abbreviations)? What is the order of tRNA entrance and exit through the ribosome?arrow_forwardCodons are a three-letter genetic code that encode for specific amino acids. Which amino acid is at the beginning of every eukaryotic protein and why?arrow_forward
- What is the significance (or function) of tRNA in protein synthesis? In other words, explain why tRNA is so important. How many different tRNA’s are there?arrow_forwardPhosphorylation is a very common post-translational modication (PTM) to regulate protein function. Which amino acids are most commonly regulated by phosphorylation? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a Leucine, arginine, serine. b Tyrosine, arginine, glutamine. C Serine, threonine, tyrosine. d Glutamine, arginine, tyrosine. e Serine, tyrosine, glutamine.arrow_forwardLook at Table 26.3 and find codons for the following amino acids:(a) Val (b) Arg (c) Serarrow_forward
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