Campbell Biology (11th Edition)
11th Edition
ISBN: 9780134093413
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Chapter 24.2, Problem 4CC
MAKE CONNECTIONS Ø Review the process of meiosis in Figure 13.8. Describe how an error during meiosis could lead to polyploidy.
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2. Why are chromosomes important?
3. How are meiosis I and meiosis II different?
1. What is the state of DNA at the end of meiosis I? What about at the end of meiosis II?
4. Why do you use non-sister chromatids to demonstrate crossing over?
7. Identify two ways that meiosis contributes to genetic recombination.
10. P
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5. What combination of alleles could result from a crossover between BD and bd chromosomes?
8. Why is it necessary to reduce the number of chromosomes in gametes?
6. How many nuclei are present at the end of meiosis II? How many chromosomes are in each?
a. Sperm Cell
b. Egg Cell
AP_5
c. Daughter Cell from Mitosis
ON 5G I
9. Blue whales have 44 chromosomes in every cell. Determine how many chromosomes you would
expect to find in the following:
d. Daughter Cell from Meiosis II
COUS
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OeScience Labs, 2016
Plz asap
Mitosis 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
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Chapter 24 Solutions
Campbell Biology (11th Edition)
Ch. 24.1 - Prob. 1CCCh. 24.1 - WHAT IF? Suppose two bird species live in a...Ch. 24.2 - Summarize key differences between allopatric and...Ch. 24.2 - Prob. 2CCCh. 24.2 - WHAT IF? Is allopatric speciation more likely to...Ch. 24.2 - MAKE CONNECTIONS Review the process of meiosis in...Ch. 24.3 - 1. What are hybrid zones, and why can they be...Ch. 24.3 - WHAT IF? Consider two species that diverged while...Ch. 24.4 - Speciation can occur rapidly between diverging...Ch. 24.4 - Prob. 2CC
Ch. 24.4 - MAKE CONNECTIONS Compare Figure 13.12 with Figure...Ch. 24 - Explain the role of gene flow in the biological...Ch. 24 - Can factors that cause sympatric speciation also...Ch. 24 - What factors can support the long-term stability...Ch. 24 - Is speciation something that happened only in the...Ch. 24 - The largest unit within which gene flow can...Ch. 24 - Prob. 2TYUCh. 24 - Prob. 3TYUCh. 24 - Prob. 4TYUCh. 24 - Which of the following factors would not...Ch. 24 - Plant species A has a diploid chromosome number of...Ch. 24 - Prob. 7TYUCh. 24 - SCIENTIFIC INQUIRY DRAW IT In this chapter, you...Ch. 24 - WRITE ABOUT A THEME: INFORMATION In sexually...Ch. 24 - Prob. 10TYU
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- VISUALIZE Sketch a series of diagrams showing each of the following, making sure to end each series with haploid cells: (a)How a pair of alleles for a single locus segregate in meiosis (b)How the alleles of two unlinked loci assort independently in meiosis (c)How the alleles of two linked loci undergo genetic recombinationarrow_forwardFigure 13.6 Which of the following statements about nondisjunction is true? Nondisjunction only results in gametes with n+1 or n-1 chromosomes. Nondisjunction occurring during meiosis II results in 50 percent normal gametes. Nondisjunction during meiosis I results in 50 percent normal gametes. Nondisjunction always results in four different kinds of gametes.arrow_forwardThe 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_forward
- Please helparrow_forwardGenetic problems: 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 First meiotic division Nondisjunction Second meiotic division Nondisjunction 00 00 develop. Benjamim XCuinmi х Х х х Xх хх о о XX O 2. 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. Further examination indicates that this girl has two X chromosomes. Explain the origin of the color- blind girl.arrow_forwardUsing diagrams, illustrate how nondisjunction can result in an aneuploid zygote.arrow_forward
- A cell has a diploid number of 6 (2n = 6). a. Draw the cell in metaphase of meiosis I. b. Draw the cell in metaphase of mitosis. c. How many chromosomes are present in a daughter cell after meiosis I? d. How many chromatids are present in a daughter cell after meiosis II? e. How many chromosomes are present in a daughter cell after mitosis? f. How many pairs of homologous chromosomes are visible in the cell in metaphase of meiosis I?arrow_forwardWhich statement best describes the genetic content of the two daughter cells in prophase II of meiosis? haploid with one copy of each gene haploid with two copies of each gene diploid with two copies of each gene diploid with four copies of each genearrow_forwardPicture name - Tradescantia spathacea meiotic cell. HPO (400x)Shown below are photomicrographs of Rhoeo tradescantia cells undergoing meiosis. Answer the following question for each of the photomicrographs: Identify the cytogenetic abnormality observed (ex. ring, chain, laggard, bridge). Identify the meiotic stage in which these aberrations are observed (as shown in the photomicrograph). Explain how these aberrations are formed and relate to the possible causal mutation(s). Will this result to sterile and/or fertile gametes? Explain.arrow_forward
- Match the stage of meiosis with the image.arrow_forwardWhat is occurring in the image below and what cell division process does this Occur in? * Homologous chromosomes Recombinant chromatids XX X XX Bivalent Non-sister Sister Chiasma chromatids chromatids crossing over, mitosisarrow_forwardOn the three horizontal lines in the center, label the following stages of Meiosis:Metaphase I, Metaphase II and gametes. • In the top left circle, draw Metaphase I of Meiosis for a cell that is 2n=4 (two large and two small chromosomes). 1) Draw chromosomes as an X or /, not decondensed. 2) Since we are focusing on the DNA, do not draw the nuclear membrane or spindle fibers. 3) For simplicity, do not indicate crossover in your diagrams. 4) Use different colors for each "set" of information (one large and one small chromosome). 5) Using the same genes/alleles as DTL 15 & 16, mark gene locations and label them in each cell. 6) Make sure you show that homologous chromosomes are the same size and sister chromatids are identical. • On the right side of the line, draw the second way homologs could line up Metaphase 1. Make sure that homologs are paired, just flip one of the pairs. ● Draw the resulting chromosomes in Metaphase II and gametes. Notice that there are four types of gametes. In…arrow_forward
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