Textbook Question
Describe the roles and relationships between tRNA anticodon sequences and mRNA codon sequences.
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Ch. 9 - The Molecular Biology of Translation
Sanders3rd EditionGenetic Analysis: An Integrated ApproachISBN: 9780135564172
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Table of contents
- Ch. 1 - The Molecular Basis of Heredity, Variation, and Evolution64
- Ch. 2 - Transmission Genetics144
- Ch. 3 - Cell Division and Chromosome Heredity81
- Ch. 4 - Gene Interaction87
- Ch. 5 - Genetic Linkage and Mapping in Eukaryotes103
- Ch. 6 - Genetic Analysis and Mapping in Bacteria and Bacteriophages73
- Ch. 7 - DNA Structure and Replication71
- Ch. 8 - Molecular Biology of Transcription and RNA Processing79
- Ch. 9 - The Molecular Biology of Translation110
- Ch. 10 - Eukaryotic Chromosome Abnormalities and Molecular Organization100
- Ch. 11 - Gene Mutation, DNA Repair, and Homologous Recombination86
- Ch. 12 - Regulation of Gene Expression in Bacteria and Bacteriophage90
- Ch. 13 - Regulation of Gene Expression in Eukaryotes38
- Ch. 14 - Analysis of Gene Function via Forward Genetics and Reverse Genetics72
- Ch. 15 - Recombinant DNA Technology and Its Applications69
- Ch. 16 - Genomics: Genetics from a Whole-Genome Perspective49
- Ch. 17 - Organelle Inheritance and the Evolution of Organelle Genomes27
- Ch. 18 - Developmental Genetics43
- Ch. 19 - Genetic Analysis of Quantitative Traits66
- Ch. 20 - Population Genetics and Evolution at the Population, Species, and Molecular Levels105
Sanders3rd EditionGenetic Analysis: An Integrated ApproachISBN: 9780135564172Not the one you use?Change textbook
Chapter 9, Problem 21c
In an experiment to decipher the genetic code, a poly-AC mRNA (ACACACAC...) is synthesized. What pattern of amino acids would appear if this sequence were to be translated by a mechanism that reads the genetic code as
A triplet without overlaps?
Verified step by step guidance1
Understand the structure of the poly-AC mRNA sequence: The sequence alternates between adenine (A) and cytosine (C), forming a repeating pattern of ACACACAC...
Recognize that translation occurs in triplets (codons). Divide the sequence into consecutive groups of three nucleotides: For example, the first few codons would be ACA, CAC, ACA, and so on.
Consult the genetic code table to determine the amino acid specified by each codon. For example, ACA codes for threonine (Thr), and CAC codes for histidine (His).
Identify the repeating pattern of codons and their corresponding amino acids. Since the sequence alternates between ACA and CAC, the resulting amino acid sequence will alternate between threonine and histidine.
Conclude that the translation of the poly-AC mRNA sequence will produce a polypeptide with a repeating pattern of amino acids: threonine (Thr) and histidine (His).
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Genetic Code
The genetic code is a set of rules that defines how the sequence of nucleotides in mRNA is translated into amino acids, the building blocks of proteins. It consists of codons, which are groups of three nucleotides that correspond to specific amino acids or stop signals during protein synthesis.
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The Genetic Code
mRNA Translation
mRNA translation is the process by which ribosomes read the sequence of an mRNA molecule to synthesize a corresponding polypeptide chain. This process involves the decoding of codons in the mRNA, where each triplet of nucleotides specifies a particular amino acid, leading to the formation of a protein.
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Triplet Codon Reading
Triplet codon reading refers to the mechanism by which the ribosome interprets the mRNA sequence in sets of three nucleotides, or codons, without overlapping. This means that each codon is read independently, allowing for a clear and systematic translation of the genetic information into a sequence of amino acids.
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Related Practice
Textbook Question
In an experiment to decipher the genetic code, a poly-AC mRNA (ACACACAC...) is synthesized. What pattern of amino acids would appear if this sequence were to be translated by a mechanism that reads the genetic code as
A doublet without overlaps?
555
views
Textbook Question
In an experiment to decipher the genetic code, a poly-AC mRNA (ACACACAC...) is synthesized. What pattern of amino acids would appear if this sequence were to be translated by a mechanism that reads the genetic code as
A doublet with overlaps?
678
views
Textbook Question
In an experiment to decipher the genetic code, a poly-AC mRNA (ACACACAC...) is synthesized. What pattern of amino acids would appear if this sequence were to be translated by a mechanism that reads the genetic code as
A triplet with overlaps?
776
views
Textbook Question
In an experiment to decipher the genetic code, a poly-AC mRNA (ACACACAC...) is synthesized. What pattern of amino acids would appear if this sequence were to be translated by a mechanism that reads the genetic code as
A quadruplet without overlaps?
547
views
Textbook Question
In an experiment to decipher the genetic code, a poly-AC mRNA (ACACACAC...) is synthesized. What pattern of amino acids would appear if this sequence were to be translated by a mechanism that reads the genetic code as
A quadruplet with overlaps?
581
views