Campbell Biology in Focus
3rd Edition
ISBN: 9780134710679
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Rebecca Orr
Publisher: PEARSON
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Chapter 22.2, Problem 3CC
MAKE CONNECTIONS Review the process of meiosis in Figure 10.8. Describe how an error during meiosis could lead to polyploidy.
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MAKE CONNECTIONS Look at Figure 12.7 and imagine the twodaughter cells undergoing another round of mitosis, yielding four cells.Compare the number of chromosomes in each of those four cells, aftermitosis, with the number in each cell in Figure 13.8, after meiosis. Whatis it about the process of meiosis that accounts for this difference, eventhough meiosis also includes two cell divisions?
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Chapter 22 Solutions
Campbell Biology in Focus
Ch. 22.1 - Prob. 1CCCh. 22.1 - WHAT IF? Suppose you are studying two bird species...Ch. 22.2 - Contrast allopatric and sympatric speciation....Ch. 22.2 - WHAT IF? Is allopatric speciation more likely to...Ch. 22.2 - MAKE CONNECTIONS Review the process of meiosis in...Ch. 22.3 - What are hybrid zones, and why can they be viewed...Ch. 22.3 - WHAT IF? Consider two species that diverged while...Ch. 22.4 - Speciation can occur rapidly between diverging...Ch. 22.4 - Summarize evidence that the yup flower-color locus...Ch. 22.4 - MAKE CONNECTIONS Compare Figure 10.11 with Figure...
Ch. 22 - The largest unit within which gene flow can...Ch. 22 - Males of different species of the fruit fly...Ch. 22 - According to the punctuated equilibria model, A....Ch. 22 - Bird guides once listed the myrtle warbler and...Ch. 22 - Which of the following factors would not...Ch. 22 - Plant species A has a diploid number of 12. Plant...Ch. 22 - SCIENCE, TECHNOLOGY, AND SOCIETY In the United...Ch. 22 - SCIENTIFIC INQUIRY DRAW IT In this chapter, you...Ch. 22 - FOCUS ON EVOLUTION Explain the biological basis...Ch. 22 - FOCUS ON INFORMATION In sexually reproducing...Ch. 22 - Suppose that females of one population of straw-...
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- VISUALIZE Draw a simple sketch illustrating how nondisjunction in meiosis can lead to Down syndrome.arrow_forwardQ34arrow_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
- Picture 1 Picture 2 Picture 3 Picture 4 Picture 5 Picture 6 Meiosis stage descriptions 7. homologous pairs line up as tetrads along the middle of the cell 8. one of each homologous pair reaches the ends of the cell, the cell begins pinching in, and two new nuclear membranes form 9. DNA condenses in two haploid cells, the nuclear membranes disintegrate 10. sister chromatids split apart and daughter chromosomes move towards the ends of twn cellsarrow_forwardMeiosis stage descriptions 7. homologous pairs line up as tetrads along the middle of the cell 8. one of each homologous pair reaches the ends of the cell, the cell begins pinching in, and two new nuclear membranes form 9. DNA condenses in two haploid cells, the nuclear membranes disintegrate 10. sister chromatids split apart and daughter chromosomes move towards the ends of two cells 11. DNA replication has occured, DNA decondensed in one cell 12. four cells with half of the genetic material of a body cell result, all are different from each other Match the picture or the image with the name of the stage it represents. Use each stage just once for either an image or description.arrow_forwardGQ6arrow_forward
- GQ5arrow_forwardQ1. Draw and label two cells at anaphase of mitosis and anaphase I of meiosis in a species having 2n - 4 chromosomes (one homologous pair of metacentric chromosomes and a pair of acrocentric chromosomes).arrow_forwardAfter meiosis 1, are the resulting cells haploid or diploid? How can you tell? Group of answer choices 1. haploid; there are no sister chromatids 2. diploid; there are homologous pairs 3. haploid; there are no homologous pairs 4. diploid; there are sister chromatidsarrow_forward
- 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 tv MacBook Air DII DD 80 888 F9 F10 F6 F7 F8 F4 F3 * #3 2$ % & 8 9 3 4 E T. Y F G J K * CO Rarrow_forwardHelparrow_forwardUsing diagrams, illustrate how nondisjunction can result in an aneuploid zygote.arrow_forward
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