Textbook Question
From the following list, identify the types of chromosome changes you expect to show phenotypic consequences.
Terminal deletion
Ch. 10 - Eukaryotic Chromosome Abnormalities and Molecular Organization
Sanders3rd EditionGenetic Analysis: An Integrated ApproachISBN: 9780135564172
Not the one you use?Change textbookSelect a different textbook
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
All textbooks
Sanders 3rd EditionCh. 10 - Eukaryotic Chromosome Abnormalities and Molecular OrganizationProblem 7
Sanders 3rd EditionCh. 10 - Eukaryotic Chromosome Abnormalities and Molecular OrganizationProblem 7Chapter 10, Problem 7
From the following list, identify the types of chromosome changes you expect to show phenotypic consequences. duplication
Verified step by step guidance1
Understand that a duplication is a type of chromosomal mutation where a segment of the chromosome is copied and inserted into the genome.
Recognize that duplications can lead to phenotypic consequences because they result in an increase in the number of copies of certain genes.
Consider that the overexpression of genes due to duplication can disrupt normal cellular function and lead to developmental abnormalities or diseases.
Identify that the phenotypic effects of a duplication depend on the size of the duplicated segment and the genes involved.
Acknowledge that duplications can be beneficial, neutral, or harmful, depending on the context and the specific genes affected.
Verified video answer for a similar problem:
This video solution was recommended by our tutors as helpful for the problem above.
Video duration:
3mWas this helpful?
Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Chromosome Duplication
Chromosome duplication is a type of chromosomal alteration where a segment of the chromosome is copied, resulting in two copies of that segment. This can lead to an increase in gene dosage, which may disrupt normal gene function and lead to phenotypic changes. For example, in certain cancers, duplications can contribute to uncontrolled cell growth.
Recommended video:
Guided course
04:18
Duplications
Phenotypic Consequences
Phenotypic consequences refer to the observable traits or characteristics that result from genetic variations, including chromosomal changes. These changes can affect an organism's morphology, physiology, or behavior. Understanding how specific chromosomal alterations lead to phenotypic outcomes is crucial in genetics and can help in predicting the effects of mutations.
Recommended video:
Guided course
10:48Mutations and Phenotypes
Genetic Imbalance
Genetic imbalance occurs when there is an unequal dosage of genes due to chromosomal changes like duplications or deletions. This imbalance can disrupt normal cellular processes and lead to developmental abnormalities or diseases. For instance, an excess of certain genes from duplications can lead to overexpression of proteins, which may have detrimental effects on the organism.
Recommended video:
Guided course
03:45Descriptive Genetics
Related Practice
Textbook Question
Consider synapsis in prophase I of meiosis for two plant species that each carries 36 chromosomes. Species A is diploid and species B is triploid. What characteristics of homologous chromosome synapsis can be used to distinguish these two species?
Textbook Question
From the following list, identify the types of chromosome changes you expect to show phenotypic consequences.
Pericentric inversion
Textbook Question
From the following list, identify the types of chromosome changes you expect to show phenotypic consequences.
Interstitial deletion
Textbook Question
Describe the importance of light and dark G bands that appear along chromosomes.
2
views
Textbook Question
Human late prophase karyotypes have about 2000 visible G bands. The human genome contains approximately 22,000 genes. Consider the region 5p1.5 through the end of the short arm of chromosome 5, which is identified on the late prophase chromosome in Figure 10.5, and assume the entire region is deleted. Approximately how many genes will be lost as a result of the deletion?