Campbell Biology (10th Edition)
10th Edition
ISBN: 9780321775658
Author: Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson
Publisher: PEARSON
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Chapter 13, Problem 13.3CR
Summary Introduction
To explain: The reason why synapsis and crossing over cannot occur in prophase II.
Introduction: Meiosis is a process that involves two cell divisions—meiosis I and meiosis II, resulting in four daughter cells that are haploid. At prophase I, the homologous chromosomes pair with each other, and the process is known as synapsis. At the end of meiosis I, the two homologs separate into two daughter cells. The sister chromatids separate to form four haploid daughter cells in meiosis II.
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Protein complex present at
centromeres in mitotic cells
structure formed when
DNA wraps around an
octameric histone core
Protein complex that is
degraded at anaphase to
allow sister chromatids to
separate at mitosis
microtubule based
structure used to segregate
chromosomes in mitosis
and meiosis
1. cohesin complex
2. kinetochore
3. monopolin
4. nucleosome
5. synaptonemal complex
6. telomere
7. sister chromatid
8. spindle
Describe in detail how the anaphase promoting complex processes result initiate anaphase, including the activities of proteins important in chromosome-kinetochore stability and sister chromatid separation e.g. securin, separase, mitotic Cdk-cyclin proteins, cohesins, Mad and Bub proteins.
29) Anaphase Il is essentially the same as mitotic anaphase except that in anaphase II
and in mitotic anaphase
D) the cells are haploid and sister chromatids separate... the cells have the same number of chromosomes as the original
cell and sister chromatids separate
the cells are diploid... the cells are haploid
chromosomes line up double file in the middle of the cell.. chromosomes line up single file in the middle of the cell
crossing over occurs... crossing over does not occur
the cells are haploid and sister chromatids separate... the cells have the same number of chromosomes as the
original cell and sister chromatids separate
Chapter 13 Solutions
Campbell Biology (10th Edition)
Ch. 13.1 - MAKE CONNECTIONS Using what you know of gene...Ch. 13.1 - How does an asexually reproducing eukaryotic...Ch. 13.1 - WHATIF? A horticulturalist breeds orchids, trying...Ch. 13.2 - MAKE CONNECTIONS In Figure 13.4. how many DNA...Ch. 13.2 - VISUAL SKILLS In The karyotype shown in Figuro...Ch. 13.2 - WHAT IF? A certain eukaryote lives as a...Ch. 13.3 - MAKE CONNECTIONS Comparc tho chromosomes in a...Ch. 13.3 - WHAT IF? After the synaptonemal complex...Ch. 13.4 - What is the original source of Variation among the...Ch. 13.4 - The diploid number for fruit flies is 8, and the...
Ch. 13.4 - Prob. 3CCCh. 13 - Explain why human offifuing resemble their parents...Ch. 13 - Compare the life cycles of animals and plants,...Ch. 13 - Prob. 13.3CRCh. 13 - Prob. 13.4CRCh. 13 - A human cell containing 22 autosomes.and a Y...Ch. 13 - The two homologs of a pair move toward opposite...Ch. 13 - Meiosis II is similar to mitosis in that (A)...Ch. 13 - Prob. 4TYUCh. 13 - If we continue to follow the cell lineage from...Ch. 13 - DRAW IT The diagram shows a cell in meiosis. (a)...Ch. 13 - Explain how you can tell that the cell in question...Ch. 13 - EVOLUTION CONNECTION Many species can reproduce...Ch. 13 - SCIENTIFIC INQUIRY The diagram in quest ion 6...Ch. 13 - Prob. 10TYUCh. 13 - SYNTHESIZE YOUR KNOWLEDGE For selected answers,...
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- in a diploid species, one somatic cell has8 chromatids before S phase. In this species, 2n=2? 2n=4? 2n=16? 2n=8? Which one? Please explain it, thank youarrow_forwardDuring meiosis I, assuming no crossing over, what chromatid combination(s) will be present at the completion of prophase? Draw all possible alignments of chromatids as migration begins during early anaphase.arrow_forwardillustrate and briefly describe the alignment, pairing, and disjunction ofsister chromatids during mitosis. Include the molecular complexes cohesin and shugoshin and the enzyme separase.arrow_forward
- 17arrow_forwardOverall, meiosis and mitosis are analogous processes involving many of the same proteins. However, some proteins function uniquely in each of these cell-division events. Explain the meiosis-specific function of the following: (a) Ime2, (b) Rec8, (c) monopolin.arrow_forwardTwo chromosomes have the ff. order of genes: Normal Abnormal A B C centromere DEFGHI A B G F E D centromere C H I (a) Does the abnormal chromosome have a pericentric or paracentric inversion? Why? (b) Draw a sketch to show how these two chromosomes would pair during synapsis, showing all four strands. In your sketch, assume crossing over has occurred between genes E and F. Illustrate the germ cells produced at the end of Meiosis II and describe these germ cells.arrow_forward
- What is a chromosome territory?arrow_forwardif there are 9 chromosome pairs that undergo mitosis and meiosis, - how many chromatids are there in Prophase? -What is the chromosome number at Metaphase? -How many centromeres are there in Metaphase I? -How many univalents per pole at Anaphase? -What is the chormosome number at Telophase and Telophase I after cytokinesis?arrow_forwardIf a cell is deficient of Separase, how would this affect the chromosome dynamic movement during mitosis and meiosis? Explain.arrow_forward
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The Cell Cycle and its Regulation; Author: Professor Dave Explains;https://www.youtube.com/watch?v=eqJqhA8HSJ0;License: Standard YouTube License, CC-BY
Cell Division - Mitosis and Meiosis - GCSE Biology (9-1); Author: Mr Exham Biology;https://www.youtube.com/watch?v=w7vp_uRA8kw;License: Standard YouTube License, CC-BY