Textbook Question
From the following list, identify the types of chromosome changes you expect to show phenotypic consequences.
Polyploidy
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Ch. 10 - Eukaryotic Chromosome Abnormalities and Molecular Organization
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. 10 - Eukaryotic Chromosome Abnormalities and Molecular OrganizationProblem 8c
Sanders 3rd EditionCh. 10 - Eukaryotic Chromosome Abnormalities and Molecular OrganizationProblem 8cChapter 10, Problem 8c
If the haploid number for a plant species is 4, how many chromosomes are found in a member of the species that has one of the following characteristics? Explain your reasoning in each case.
Octaploidy
Verified step by step guidance1
Step 1: Understand the concept of haploid number. The haploid number (n) represents the number of chromosomes in a single set of the genome. For this plant species, the haploid number is given as 4 (n = 4).
Step 2: Define octaploidy. Octaploidy refers to an organism having eight sets of chromosomes (8n). This is a type of polyploidy, where the chromosome number is a multiple of the haploid number.
Step 3: Calculate the total number of chromosomes in an octaploid individual. Multiply the haploid number (n = 4) by the number of sets (8n). The formula is: .
Step 4: Explain the reasoning. Since octaploidy means eight complete sets of chromosomes, the total chromosome count is the product of the haploid number and the number of sets. This ensures the organism has eight times the genetic material of a haploid cell.
Step 5: Conclude the calculation process. The total chromosome count for an octaploid individual is determined by the multiplication performed in Step 3. This value represents the number of chromosomes in the organism.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Haploid and Diploid Numbers
The haploid number (n) refers to the number of chromosomes in a gamete, which is half the total number of chromosomes in a diploid organism. In this case, if the haploid number for the plant species is 4, the diploid number (2n) would be 8, representing the total chromosomes in somatic cells.
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Diploid Genetics
Polyploidy
Polyploidy is a condition in which an organism has more than two complete sets of chromosomes. Octaploidy, specifically, means that the organism has eight sets of chromosomes. This can occur through processes such as whole-genome duplication, which is common in plants and can lead to increased size and vigor.
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Calculating Chromosome Number in Polyploids
To determine the total number of chromosomes in a polyploid organism, multiply the haploid number by the number of chromosome sets. For octaploidy, with a haploid number of 4, the total chromosome count would be 4 (haploid) x 8 (sets) = 32 chromosomes in the octaploid plant.
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Related Practice
Textbook Question
If the haploid number for a plant species is 4, how many chromosomes are found in a member of the species that has one of the following characteristics? Explain your reasoning in each case.
Diploidy
481
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Textbook Question
If the haploid number for a plant species is 4, how many chromosomes are found in a member of the species that has one of the following characteristics? Explain your reasoning in each case.
Pentaploidy
528
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Textbook Question
If the haploid number for a plant species is 4, how many chromosomes are found in a member of the species that has one of the following characteristics? Explain your reasoning in each case.
Trisomy
624
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Textbook Question
If the haploid number for a plant species is 4, how many chromosomes are found in a member of the species that has one of the following characteristics? Explain your reasoning in each case.
Triploidy
705
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Textbook Question
If the haploid number for a plant species is 4, how many chromosomes are found in a member of the species that has one of the following characteristics? Explain your reasoning in each case.
Monosomy
451
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