Textbook Question
Using the following amino acid sequences obtained from different species of apes, construct a phylogenetic tree of the apes.
Ch. 1 - The Molecular Basis of Heredity, Variation, and Evolution
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
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Sanders 3rd EditionCh. 1 - The Molecular Basis of Heredity, Variation, and EvolutionProblem 22b
Sanders 3rd EditionCh. 1 - The Molecular Basis of Heredity, Variation, and EvolutionProblem 22bChapter 1, Problem 22b
Examine the following figure and answer the following questions.
What characteristic is shared by all clades in the figure?
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Examine Figure 1.17 carefully to identify the clades represented in the figure. A clade is a group of organisms that includes a common ancestor and all its descendants.
Understand that a key characteristic of clades is that they are monophyletic, meaning they include an ancestor and all of its descendants, and no other organisms.
Look for shared derived characteristics (synapomorphies) in the figure. These are traits that are unique to a particular clade and distinguish it from other groups.
Determine if the figure highlights evolutionary relationships, such as branching patterns, which indicate common ancestry among the clades.
Conclude that the shared characteristic of all clades in the figure is their inclusion of a common ancestor and all its descendants, which is a fundamental principle of clade formation in phylogenetics.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Clades
A clade is a group of organisms that includes a common ancestor and all its descendants. Clades are fundamental in the study of phylogenetics, as they help illustrate evolutionary relationships. Understanding clades allows scientists to categorize species based on shared characteristics and evolutionary history.
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Phylogenetic Trees
Phylogenetic Tree
A phylogenetic tree is a diagram that represents the evolutionary relationships among various biological species based on their genetic characteristics. Each branch point indicates a divergence from a common ancestor, and the arrangement of the tree reflects the evolutionary pathways. Analyzing a phylogenetic tree helps identify shared traits among clades.
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Shared Characteristics
Shared characteristics, or synapomorphies, are traits that are common to a group of organisms and are inherited from a common ancestor. These traits are crucial for defining clades and understanding evolutionary relationships. Identifying shared characteristics helps in determining how closely related different species are within a phylogenetic context.
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Related Practice
Textbook Question
Examine the following figure and answer the following questions.
How many clades are shown in the figure?
Textbook Question
Suppose a genotype for a protein-producing gene can have any combination of three alleles, A₁, A₂, and A₃.
List all the possible genotypes involving these three alleles.
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Textbook Question
Examine the following figure and answer the following questions.
What characteristics are shared by the mammalian clade and the primate clade? What characteristic distinguishes the primates from other members of the mammalian clade?
Textbook Question
The following segment of DNA is the template strand transcribed into mRNA:
5'-...GACATGGAA...-3'
What is the amino acid sequence produced by translation?
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Textbook Question
Fill in the missing nucleotides (so there are three per block) and the missing amino acid abbreviations in the graphic shown here.
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