Biology: Concepts and Investigations
5th Edition
ISBN: 9781260259049
Author: Hoefnagels
Publisher: MCG
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Chapter 9.7, Problem 1MC
Summary Introduction
To explain:
The way through which the polyploid offspring can be developed if the during meiosis I in one of the parent lead to nondisjunction of all the chromosomes whereas the other parent contributes normal number of chromosomes.
Concept introduction:
The non-disjunction of the chromosomes refers to the non-separation of chromosomes during either anaphase I or anaphase II of the cell cycle. This results in presence of an extra copy of chromosomes in the daughter cells.
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Draw a hypothetical cell’s chromosome configuration undergoing meiosis (show before meiosis, after meiosis I, and then after meiosis II) under each of the following situations:
If there is one pair of homologous chromosomes AND there is nondisjunction in meiosis I.
If there are two pairs of homologous chromosomes, one labeled ‘A’ and another labeled ‘B’.
An individual is heterozygous for a reciprocal translocation, with the following chromosomes:
A • B C D E F
A • B C V W X
R ST • U D E F
R ST • U V W X
Q. Draw a picture of these chromosomes pairing in prophase I of meiosis.
Use the diagram below to figure out how each monosomy or trisomy can
a) Normal X chromosome
segregation
b) Nondisjunction in
meiosis I
c) Nondisjunction in
meiosis II
Diploid cell at start of
meiosis
Nondisjunction
First meiotic division
Second meiotic
division
Nondisjunction
00 00
00
PEARS N
develop.
Benjamin
XCummixes
х х
х х
XX
XX
о о
XX
1. A color-blind man married a normal woman. Their daughter, who was phenotypically normal, married
a normal man and the couple produced three children, a normal boy, a color-blind boy, and a color-blind
girl with Turner syndrome. Explain the origin of the color-blind girl with Turner syndrome.
Chapter 9 Solutions
Biology: Concepts and Investigations
Ch. 9.1 - Prob. 1MCCh. 9.1 - How can asexually reproducing organisms acquire...Ch. 9.1 - Prob. 3MCCh. 9.2 - Prob. 1MCCh. 9.2 - Prob. 2MCCh. 9.3 - How do haploid and diploid nuclei differ?Ch. 9.3 - Prob. 2MCCh. 9.3 - Prob. 3MCCh. 9.3 - Prob. 4MCCh. 9.4 - What happens during interphase
Ch. 9.4 - How do the events of meiosis I and meiosis II...Ch. 9.5 - Prob. 1MCCh. 9.5 - Prob. 2MCCh. 9.5 - How are identical twins different from fraternal...Ch. 9.6 - Prob. 1MCCh. 9.6 - In what ways are mitosis and meiosis different?Ch. 9.7 - Prob. 1MCCh. 9.7 - Prob. 2MCCh. 9.8 - What are the stages of sperm development in...Ch. 9.8 - Prob. 2MCCh. 9.8 - How does gamete production in plants differ from...Ch. 9.9 - Prob. 1MCCh. 9.9 - Prob. 2MCCh. 9 - Prob. 1MCQCh. 9 - Prob. 2MCQCh. 9 - Prob. 3MCQCh. 9 - Prob. 4MCQCh. 9 - Prob. 5MCQCh. 9 - Explain why evolution often selects traits that...Ch. 9 - Describe a situation in which asexual reproduction...Ch. 9 - Prob. 3WIOCh. 9 - Draw all possible metaphase I chromosomal...Ch. 9 - Prob. 5WIOCh. 9 - List examples of abnormalities in chromosome...Ch. 9 - Prob. 7WIOCh. 9 - Prob. 8WIOCh. 9 - 1. Review section 9.5 and the Survey the Landscape...Ch. 9 - 2. Fit the following terms into this concept map:...Ch. 9 - 3. Create a separate concept map that includes...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Compare meiotic anaphase I with meiotic anaphase II. Which meiotic anaphase is most similar to the mitotic anaphase?arrow_forwardHuman females have two X chromosomes (XX); males have one X and one Y chromosome (XY). a. With respect to X-linked alleles, how many different types of gametes can a male produce? b. If a female is homozygous for an X-linked allele, how many types of gametes can she produce with respect to that allele? c. If a female is heterozygous for an X-linked allele, how many types of gametes can she produce with respect to that allele?arrow_forwardAn individual heterozygous for a reciprocal translocation possesses the following chromosomes: A B • C D E F G A B • C D V W X R S • T U E F G R S • T U V W X Q. Draw the pairing arrangement of these chromosomes in prophase I of meiosis.arrow_forward
- A 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_forwardAn individual heterozygous for a reciprocal translocation possesses the following chromosomes: A B • C D E F G A B • C D V W X R S • T U E F G R S • T U V W X Q. Diagram the alternate, adjacent-1, and adjacent-2 segregation patterns in anaphase I of meiosis.arrow_forwardConsider a diploid cell that has 2n = 4 chromosomes: one pair of metacentric chromosomes and one pair of acrocentric chromosomes. Suppose that this cell undergoes nondisjunction, giving rise to an autotriploid cell (3n). The triploid cell then undergoes meiosis. Draw the different types of gametes that could result from meiosis in the triploid cell, showing the chromosomes present in each type. To distinguish between the different metacentric and acrocentric chromosomes, use a different color to draw each metacentric chromosome; similarly, use a different color to draw each acrocentric chromosome.arrow_forward
- Consider a diploid cell that contains 7 pairs of chromosomes. Each pair includes a maternal and a paternal member (for example: AP pair) or AP B ^ n * B ^ p (two pairs). How many different combinations of chromatids are possible during the early phases of anaphase in meiosis II?arrow_forwardDraw a diagram to show how nondisjunction of all chromosomesduring meiosis I in one parent could lead to polyploid offspring.(Use 2n = 6 for the starting cells; assume the other parent’s gametecontributes the normal number of chromosomes.)arrow_forwardFor an organism with 3 pairs of chromosomes (6 total chromosomes, 2n = 6), draw chromosome diagrams for the following phases of meiosis: prophase I, metaphase I, anaphase I, telophase I, prophase II, metaphase II, anaphase II & telophase II. Be sure to draw the correct number of chromosomes and the correct number of chromatids per chromosome. Use a different color to represent each chromosome type (for example, use blue to indicate all copies of chromosome 1, red for all copies of chromosome 2, and green for all copies of chromosome 3).arrow_forward
- Draw and label a 2n=4 cell going through anaphase I of meiosis.arrow_forwardComplete the following table for the number of chromosomes and chromatids per cell during the different stages of meiosis II for a 2n = 6 organism. NOTE: For telophase, consider the number of chromosomes/chromatids per cell after cytokinesis. Meiosis II #chromosomes/cell #chromatids/cell Prophase II Metaphase 11 Anaphase II Telophase IIarrow_forwardIn metaphase I of meiosis, the homologous chromosomes of a cell lined up as shown below. Part 1 Select all the possible gametes if this cell suffered from nondisjunction of the smaller chromosome in meiosis I (meiosis II normal). Assume no crossing-over. a A A a a XX b b BB ABb O A ab O Ab aBBarrow_forward
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