Campbell Biology in Focus; Modified Mastering Biology with Pearson eText -- ValuePack Access Card -- for Campbell Biology in Focus (2nd Edition)
2nd Edition
ISBN: 9780134433776
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman
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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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 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.
WHAT IF? Propose a possible reason that the firstnaturally occurring mutant fruit fly Morgan sawinvolved a gene on a sex chromosome and was foundin a male.
MAKE CONNECTIONS Review the description of meiosis (see Figure 13.8) and Mendel’s laws of segregationand independent assortment (see Concept 14.1). Whatis the physical basis for each of Mendel’s laws?
Chapter 22 Solutions
Campbell Biology in Focus; Modified Mastering Biology with Pearson eText -- ValuePack Access Card -- for Campbell Biology in Focus (2nd Edition)
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 - SCIENTIFIC INQUIRY DRAW IT In this chapter, you...Ch. 22 - SCIENCE, TECHNOLOGY, AND SOCIETY In the United...Ch. 22 - FOCUS ON EVOLUTION Explain the biological basis...Ch. 22 - FOCUS ON INFORMATION In sexually reproducing...Ch. 22 - Prob. 11TYU
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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_forwardVISUALIZE Draw a simple sketch illustrating how nondisjunction in meiosis can lead to Down syndrome.arrow_forwardUsing diagrams, illustrate how nondisjunction can result in an aneuploid zygote.arrow_forward
- 14. generate(s) 2 haploid cells from every parent cell. 1. Neither mitosis nor meiosis 2. Both mitosis and meiosisarrow_forwardQ. What are the possible changes in chromosome number and structure that will occur in a living species with six haploid chromosomes ? You can give the phenotypic changes that will occur on a real and / or hypothetical sample.arrow_forwardTask: Show your work/explain your reasoning as much as possible. If a certain species has a DNA content of 12 picograms in each diploid cell's nucleus when the cell in in G1 of the cell cycle, what would be the expected DNA content (in picograms) of a triploid cell (from the same species) in mitotic prophase? Consider ploidy changes and/or chromosome form changes, if applicable, when explaining your reasoning.arrow_forward
- Need help with question: - if a nucleus has 12 chromosomes when it begins meiosis, how may chromosomes dose it have after telophase I ? How many are there after telophase II? - which meiotic phases underlie variation? - why is it advantageous for a species to have variation with in genetic material? When is it a disadvantage?arrow_forwardFill 3 blank spaces using MITOSIS MEIOSIS OR FERTILIZATIONarrow_forwardDiscuss Concepts Can a linkage map be made for a haploid organism that reproduces sexually?arrow_forward
- Which 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_forwardMAKE CONNECTIONS The ABO blood type locus hasbeen mapped on chromosome 9. A father who has typeAB blood and a mother who has type O blood have achild with trisomy 9 and type A blood. Using this information, can you tell in which parent the nondisjunctionoccurred? Explain your answer. (See Figures 14.11and 15.13.)arrow_forwardWHAT IF? A chicken has 78 chromosomes in its somaticcells. How many chromosomes did the chicken inheritfrom each parent? How many chromosomes are in eachof the chicken’s gametes? How many chromosomes willbe in each somatic cell of the chicken’s offspring?arrow_forward
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