Campbell Biology In Focus, Loose-leaf Edition (3rd Edition)
3rd Edition
ISBN: 9780134895727
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky
Publisher: PEARSON
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Chapter 22.4, Problem 3CC
MAKE CONNECTIONS Compare Figure 10.11 with Figure 22.18. What cellular process could cause the hybrid chromosomes in Figure 22.18 to contain DNA from both parent species? Explain.
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Chapter 22 Solutions
Campbell Biology In Focus, Loose-leaf Edition (3rd 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 - 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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- please help?arrow_forwardplease help?arrow_forwardVISUALIZE 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_forward
- . Genomes A, B, and C all have basic chromosomenumbers (x) of nine. These genomes were derivedoriginally from plant species that had diverged from each other sufficiently far back in the evolutionarypast that the chromosomes from one genome can nolonger pair with the chromosomes from any other genome. For plants with the following kinds of euploidchromosome complements, (i) state the number ofchromosomes in the organism; (ii) provide terms thatdescribe the individual’s genetic makeup as accurately as possible; (iii) state whether or not it is likelythat this plant will be fertile, and if so, give the number of chromosomes (n) in the gametes.a. AABBCb. BBBBc. CCCd. BBCCe. ABCf. AABBCCarrow_forwardSpecies or F1 hybrid Root tip chromosome number The following table presents chromosome data on four species of plants and their F1 hybrids: Meiosis I Metaphase Number of Number of bivalents univalents A 20 10 0 B 20 10 0 C 10 5 0 D 10 5 0 A x B 20 0 20 A x C 15 5 5 AxD 15 5 5 Cx D 10 0 10 Deduce the chromosomal origin of Species A. Show clearly the basis of your answer by analyzing and diagramming the crosses given above. Distinguish between chromosomes and give chromosome number for individuals in the crosses mentioned above. From these crosses, diagram the cross that gave rise to Species A. b. How many bivalents and univalents would you expect to observe at meiotic metaphase I in a hybrid between species C and species B? c. How many bivalents and univalents would you expect to observe at meiotic metaphase I in a hybrid between species D and species B?arrow_forwardcan you please quickly explain?arrow_forward
- If two chromosomes of a species are the same length and have similar centromere placements and yet are not homologous, what is different about them? Choose 1: A) Genes are different B) Alleles are different C) Loci are different D) Nothing is differentarrow_forwardA species of cereal rye (Secale cereale) has a chromosome number of 14, while a species of Canadian wild rye (Elymus canadensis) has a chromosome number of 28. Sterile hybrids can be produced by crossing Secale with Elymus. (a) What would be the expected chromosome number in the somatic cells of the hybrids? (b) Given that none of the chromosomes pair at meiosis I in the sterile hybrid (Hang and Franckowlak, 1984), speculate on the anaphase I separation patterns of these chromosomes.arrow_forward. What is the total number of chromosomes this organism has? • What is the haploid number (n) of this organism? ID each unique shape with a number.... • Is this organism haploid, diploid, triploid, or tetraploid? Put the letter "a" by those chromosomes from one parent and the letter "b" by those from another. 11 • Draw in duplicated chromosomes now....imagine we're in prophase of mitosis... • What is the difference between • 5A vs. 5B? ● 5A vs. 5A copy?arrow_forward
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