Genetic Analysis: An Integrated Approach (2nd Edition)
2nd Edition
ISBN: 9780321948908
Author: Mark F. Sanders, John L. Bowman
Publisher: PEARSON
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Textbook Question
Chapter 13, Problem 3P
If the haploid number for a plant species is
diploidy
pentaploidy
octaploidy
trisomy
triploidy
monosomy
tetraploidy
hexaploidy
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For a species with a diploid number of 22, how many chromosomes will be present in the somatic nuclei of individuals that are haploid, tetraploid, trisomic, and monosomic.
Consider a diploid organism that follows the XX-XO mode of sex determination. Normally, there are 7 chromosomes in its somatic cell. The chromosomal composition is as follows:
Chromosome I is a large acrocentric chromosome
Chromosome II is a large telocentric chromosome
Chromosome III is a small telocentric chromosome
Chromosome IV (X chromosome) is a medium submetacentric chromosome
Aneuploidy was observed in a particular individual wherein there are three copies of Chromosome III.
Illustrate the source of aneuploidy if it occurs in Meiosis I. Diagram spermatogenesis starting with the primary spermatocyte up to spermatozoa, making sure to distinguish between chromosomes and the different phases of meiosis I (prophase I*, metaphase I, anaphase I, telophase I). Indicate the respective chromosome equation and chromosome number of the primary spermatocyte, secondary spermatocyte, spermatid, and spermatozoon.
Consider a diploid organism that follows the XX-XO mode of sex determination. Normally, there are 7 chromosomes in its somatic cell. The chromosomal composition is as follows:
Chromosome I is a large acrocentric chromosome
Chromosome II is a large telocentric chromosome
Chromosome III is a small telocentric chromosome
Chromosome IV (X chromosome) is a medium submetacentric chromosome
Aneuploidy was observed in a particular individual wherein there are three copies of Chromosome III.
Diagram how aneuploidy may occur through Mitosis starting from a parent cell at G1 phase. Make sure to distinguish between chromosomes and the following phases of cell division (G1 phase, prophase, metaphase, anaphase, telophase, cytokinesis). Indicate the chromosome equation and chromosome number of the parent cell and the daughter cells. *S phase and G2 phase purposefully excluded
Chapter 13 Solutions
Genetic Analysis: An Integrated Approach (2nd Edition)
Ch. 13 - Prob. 1PCh. 13 - For one set of chromosomes carried by a triploid...Ch. 13 - 10.8 If the haploid number for a plant species is...Ch. 13 - From the following list, identify the types...Ch. 13 - Mating between a male donkey (2n=64) and a female...Ch. 13 - Prob. 6PCh. 13 - Prob. 7PCh. 13 - What can we conclude about a mutational event...Ch. 13 - 9. In terms of the chromosome content of nuclei,...Ch. 13 - 10. In Drosophila, an X-linked recessive allele...
Ch. 13 - The plants in this problem are the same as those...Ch. 13 - A normal chromosome and its homolog carrying a...Ch. 13 - 10.12 A pair of homologous chromosomes in...Ch. 13 - 10.13 An animal heterozygous for a reciprocal...Ch. 13 - Dr. Ara B. Dopsis has an idea he thinks will be a...Ch. 13 - Suppose polymerase chain reaction (PCR) is used...Ch. 13 - Prob. 17PCh. 13 - A healthy couple with a history of three previous...Ch. 13 - A boy with Down syndrome (trisomy 21) has 46...Ch. 13 - Prob. 20PCh. 13 - 10.28 A small population of deer living on an...Ch. 13 - In humans that XX/XO mosaics, the phenotype is...Ch. 13 - 10.20 A plant breeder would like to develop the...Ch. 13 - In Drosophilia, seven partial deletion (1to7)...Ch. 13 - Two experimental varieties of strawberry are...Ch. 13 - 10.23 In the tomato, Solanum esculentum, tall ()...Ch. 13 - In Drosophila, the wild-type red eye color is...Ch. 13 - A DrosophilaPelement 2.5kb in length is modified...Ch. 13 - A biologist studying flight mechanisms in insects...Ch. 13 - 30. After reading Experimental Insight and...Ch. 13 - 31. Two NotI restriction enzymes cleave DNA on...Ch. 13 - For the following crosses, determine as accurately...
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- Discuss the following sets of terms: a. trisomy and triploidy b. aneuploidy and polyploidyarrow_forwardWhich of the following statements is not true in comparing mitosis and meiosis? a. Twice the number of cells are produced in meiosis as in mitosis. b. Meiosis is involved in the production of gametes, unlike mitosis. c. Crossing over occurs in meiosis I but not in meiosis II or mitosis. d. Meiosis and mitosis both produce cells that are genetically identical. e. In both mitosis and meiosis, the parental cell is diploid.arrow_forwardIn the following diagram, designate each daughter cell as diploid (2n) or haploid (n).arrow_forward
- In the plant, Haplopappus gracile there is one long pair and one short pair of chromosomes. In the diagrams below, anaphase of individual cells in meiosis or mitosis in a plant that is heterozygous for the genes, A and B (which are on separate chromosomes) are shown. The lines represent chromosomes or chromatids and the points of the "V" are the centromeres. For each case, indicate if the cell represents meiosis I, meiosis II, mitosis, or impossible situation. Provide a brief (one sentence) reason for your decision. 1. A A a В a B 9. A a B A a 2. а В В a A a B 9. B. a A 3.arrow_forwardOne reason that worker bees forgo their own reproduction to help their sister (the queen) reproduce is that female bees are more closely related to their sisters than they are to their own offspring. This quirk of genetics results from the fact that bees have haplodiploid sex determination, in which females are diploid, with a mother and a father, but males are haploid, developing from unfertilized eggs. Because males are haploid, they produce sperm by mitosis. Explainwhy haplodiploid sex determination causes females to be more closely related to their sisters than to their offspring.arrow_forwardA diploid plant is heterozygous for two linked genes, A and B. Crossovers between the two genes occurs in ~10% of meiosis. Multiple crossovers are never observed in one cell undergoing meiosis. What fraction of the gametes produced by this diploid plant are expected to be recombinant type? O 5% O 10% 2.5% 25%arrow_forward
- The diagram below shows a cell during Meiosis II: a) What phase of Meiosis II is the cell in? How do you know? b) Assuming all of the chromosomes present during Meiosis II are shown in the figure above, how many chromosomes (counting homologous pairs as two chromosomes) does a gamete from this organism have? c) Draw the same cell during the same phase of Meiosis I. Label the elementsarrow_forwardMitosis produces 2 daughter cells that are identical to the starting cell. Explain how meíosis is different using this diagram to help you. 1) How many cells are created through meiosis? 2) Describe the chromosomes in each gamete at the end of meiosis? Are the set of chromosomes in a gamete identical to the starting cell like they are in mitosis? Are there the same number of chromosomes in each gamete as the starting cell? Starting cell's chromosomes: 1А, 1B, 2A, 2B Interphase After the S phase of interphase: 4 pairs of sister chromatids 1A 1A 1B 1B 2A 2A 2B 2B Meiosis has 2 rounds of cell division 1A, 1A, 1B, 1B, 2A 2B 2A 2B tv MacBook Air DII DD 80 888 F9 F10 F6 F7 F8 F4 F3 * #3 2$ % & 8 9 3 4 E T. Y F G J K * CO Rarrow_forwardNondisjunction results in uneven distribution of chromosomes during meiosis. Which of the following are true during meiosis? Select all that apply When nondisjunction occurs in meiosis II, sister chromatids fail to separate When nondisjunction occurs in meiosis I, homologous chromosomes fail to separate If a cell has a diploid number of 6 (2n =6), and one pair of chromosomes experiences nondisjunction during meiosis I, then two cells will have 4 chromosomes, and two cells will have 2 chromosomes If a cell has a diploid number of 6 (2n =6), and one pair of chromosomes experiences nondisjunction during meiosis I, then two cells will have 6 chromosomes, and two cells will have nonearrow_forward
- If a diploid cell entering meiosis has 12 chromosome pairs, what is the number of possible chromosomes at the end of meiosis?arrow_forwardA certain species of animal has 18 chromosomes in its diploid cells (2n=18). Describe what the metaphase chromosome arrangement would look like for this species in each of the following stages: mitosis, meiosis I, and meiosis IIarrow_forwardDiscuss the following sets of terms: a) trisomy and triploidy, b) aneuploidy and polyploidy.arrow_forward
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