Cambell Biology 11e Vol1 For Utah Valley University Ch 1-25
11th Edition
ISBN: 9781323691519
Author: Urry
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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(1) In people, the X chromosome is bigger than the Y chromosome. Does that mean females have more DNA than males? Explain.
(2) What would happen if the SRY gene was moved to chromsome 2, adjacent to the LCT gene? Would SRY still be able to carry out is function? Why or why not? If no, what would be the consequences? Be specific.
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.
Chapter 13 Solutions
Cambell Biology 11e Vol1 For Utah Valley University Ch 1-25
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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- A) Quiescent Anaphase Telophase Telophase phase Metaphase Prometaph The maternal and paternal chromosomes of each homologous pair separate and reach the poles of the cell, nuclear envelopes form around them, and cytokinesis follows to produce daughter cells.arrow_forwardX chromosome inactivation in a diploid XX female is not completely inactivated, explain?arrow_forwarda. Manually, using a pencil, draw a cell in anaphase II from an organism in which 2n = 2 and each chromosome is metacentric. b. Given that each G1 nucleus from this organism contains 16 picograms of DNA, how many picograms of chromosomal DNA would you expect in the cell shown here?arrow_forward
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