Domanda del libro di testo
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
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Ch. 10 - Eukaryotic Chromosome Abnormalities and Molecular Organization
Sanders3rd EditionGenetic Analysis: An Integrated ApproachISBN: 9780135564172
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TOC.tableOfContents
- 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: 9780135564172Non è quello che usi tu?Cambia libro di testo
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Sanders 3rd EditionCh. 10 - Eukaryotic Chromosome Abnormalities and Molecular OrganizationProblema 8f
Sanders 3rd EditionCh. 10 - Eukaryotic Chromosome Abnormalities and Molecular OrganizationProblema 8fCapitolo 10, Problema 8f
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
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Understand the haploid number: The haploid number (n) represents the number of chromosomes in a single set of the organism's genome. For this plant species, n = 4. Therefore, the diploid number (2n), which is the total number of chromosomes in a normal somatic cell, is calculated as 2 × n = 8 chromosomes.
Define monosomy: Monosomy refers to the loss of one chromosome from the diploid set. In a diploid organism, this results in a chromosome count of 2n - 1. For this plant species, the diploid number is 8, so monosomy would result in 8 - 1 = 7 chromosomes.
Explain the reasoning: Monosomy occurs when one chromosome is missing from the normal diploid set. This can happen due to errors during cell division, such as nondisjunction, where chromosomes fail to separate properly during meiosis or mitosis.
Relate to the haploid number: Since the haploid number is 4, the diploid number is 8. Monosomy reduces the chromosome count by one, resulting in 7 chromosomes. This is consistent with the definition of monosomy as 2n - 1.
Summarize the calculation: To determine the chromosome count in a monosomic individual, subtract one chromosome from the diploid number (2n). For this species, the calculation is 8 - 1 = 7 chromosomes.
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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. Understanding these terms is crucial for determining chromosome counts in various genetic scenarios.
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Percorso guidato
27:36
Diploid Genetics
Monosomy
Monosomy is a type of aneuploidy where one chromosome from a pair is missing, resulting in a total of one less chromosome than the diploid number. For a plant with a diploid number of 8, monosomy would mean that one chromosome is absent, leading to a total of 7 chromosomes in that individual. This concept is essential for analyzing the genetic implications of chromosome loss.
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09:05Aneuploidy
Chromosome Structure and Function
Chromosomes are structures within cells that contain DNA and proteins, playing a critical role in heredity and gene expression. Each chromosome carries specific genes that determine traits. Understanding chromosome structure helps in grasping how changes in chromosome number, such as those seen in monosomy, can affect the organism's development and function.
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07:10Chromosome Structure
Pratica correlata
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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.
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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.
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