Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Chapter 13, Problem 13TYK
The Texan nine-banded armadillo (Dasypus novemcinctus) has a diploid chromosome number of 64 (i.e., 2n = 64). How many chromatids would be found in an armadillo cell in prophase I of meiosis?
- a. 32
- b. 64
- c. 128
- d. You can’t tell based on this information.
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Students have asked these similar questions
How many different combinations of maternal and paternal chromosomes can be packaged in gametes by an organism with a diploid number of 6 (2n=6; n=3)
A. 24
B. 8
C. 32
D. 12
A mature female tiger, with 38 diploid chromosomes in each somatic cell, produces haploid oocytes (egg cells) with how many chromosomes per cell?
A. 18 autosomes, and 1 sex-determining chromosome (Y)
B. 36 autosomes, and 2 sex-determining chromosomes (XX)
C. 18 autosomes, and 1 sex-determining chromosome (X) D. 34 autosomes, and 2 sex-determining chromosomes (XY) E. 17 autosomes, and 1 sex-determining chromosome (X)
Which case of nondisjunction is MOST likely to result in the production of an aneuploid cell?
A. nondisjunction in meiosis I because two of the resulting cells will be n+1 and two will be n–1
B. nondisjunction in meiosis I because two of the resulting cells will be n; one will be n+1 and one will be n–1
C. nondisjunction in meiosis II because two of the resulting cells will be n+1 and two will be n–1
D. nondisjunction in meiosis II because all four resulting cells will be n; one will be n+1 and one will be n–1
Chapter 13 Solutions
Study Guide for Campbell Biology
Ch. 13 - a. How many chromosomes are there in the somatic...Ch. 13 - Prob. 2IQCh. 13 - The following diagrams represent some of the...Ch. 13 - a. How many different assortments of maternal and...Ch. 13 - Label the following diagram to review the terms...Ch. 13 - Describe the key events of the following stages of...Ch. 13 - Create a concept map to help you organize your...Ch. 13 - What does meiosis do? a. It produces haploid cells...Ch. 13 - Asexual reproduction of a diploid organism a. is...Ch. 13 - Homologous chromosomes a. have identical DNA...
Ch. 13 - Which of the following represents a clone? a. a...Ch. 13 - What is a karyotype? a. a genotype of an...Ch. 13 - A reduction in the number of chromosomes per cell...Ch. 13 - In most fungi and some protists, a. Gametes are...Ch. 13 - In the alternation of generations found in plants,...Ch. 13 - A synaptonemal complex would be found during a....Ch. 13 - During meiosis I, a. Homologous chromosomes...Ch. 13 - Compared with one of the four cells produced by...Ch. 13 - Meiosis II is similar to mitosis because a. sister...Ch. 13 - The Texan nine-banded armadillo (Dasypus...Ch. 13 - Which of the following is a key difference between...Ch. 13 - Which of the following is not true of homologous...Ch. 13 - Which of the following statements is not true? a....Ch. 13 - In a species with a diploid number of 6, how many...Ch. 13 - In a sexually reproducing species with a diploid...Ch. 13 - The calculation of offspring in question 18...Ch. 13 - Prob. 20TYKCh. 13 - Which of the following statements describes why or...Ch. 13 - What is the evolutionary significance of bdelloid...
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- Which division of meiosis (meiosis I or meiosis II) a. most resembles mitosis? b. cuts the chromosome number in half? c. produces 2 haploid cells? d. always begins with diploid cells?arrow_forwardA diploid species has 2N=6 total chromosomes. How many chromatids would be present in a somatic cell at Anaphase I of Meiosis? A. 24 B. 3 C. 6 D. 12arrow_forwardConsider a diploid cell from an unknown organism that undergoes meiosis. The four gametes produced have 8, 8, 7, and 5 chromosomes. When did nondisjunction occur? a.Meiosis I and II b.Only meiosis I c.Mitosis d.Only meiosis II e.Nondisjunction did not occurarrow_forward
- How many different combinations of maternal and paternal chromosomes can be packaged in gametes made by an organism with a diploid number of 8 (2n=8)? a. 32 b. 16 c. 2 d. 4arrow_forwardBeginning with a single cell, how many gametes at the end of meiosis are produced with a normal number of chromosomes (n) if there was a single nondisjunction event during Meiosis I? a. 0 b. 4 c. 1 d. 2arrow_forwardGenes G and H are located on chromosome 18. A woman with the genotype Gg Hh has a child with a man with the genotype GG HH. Unfortunately, the child has the genotype Ggg hhh and only survives for 6 months. When and in which parent did nondisjunction occur? Group of answer choices a. Meiosis II in the mother b. Meiosis I in the mother c. Meiosis I in the father d. Meiosis II in the fatherarrow_forward
- Consider 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_forwardWhat is the designation for a gamete with one copy of each homologous chromosome? Select one: a. 3n b. 46 chromosomes c. n d. 2narrow_forwardHow many rounds of cell division are there in meiosis? Group of answer choices A. 1 B. 0 C. 2 D. 4arrow_forward
- A snake has a diploid number of chromosomes of 48. How many chromatids would be present in a diploid cell at the start of meiosis? Group of answer choices A. 12 B. 24 C. 48 D. 96 E. 192arrow_forwardConsider a diploid cell that has 2 n = 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 (3 n). 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 acrocentricchromosomes, use a different color to draw each metacentric chromosome; similarly, use a different color to draw each acrocentric chromosome.arrow_forwardConsider a diploid cell that has 2 n = 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 (3 n). 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
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