CAMPBELL BIOLOGY-W/MOD.MASTERBIOLOGY
11th Edition
ISBN: 9780134683461
Author: Urry
Publisher: PEARSON
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Chapter 24.4, Problem 3CC
MAKE CONNECTIONS Ø Compare Figure 13.12 with Figure 24.18. What cellular process could cause the hybrid chromosomes in Figure 24.18 to contain DNA from both parent species? Explain.
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. Imagine that you have done a cross between twostrains of yeast, one of which has the genotype A B Cand the other a b c, where the letters refer to threerather closely linked genes in the order given. Youexamine many tetrads resulting from this cross, andyou find two that do not contain the expected two Band two b spores. In tetrad I, the spores are A B C, AB C, a B c, and a b c. In tetrad II, the spores are A BC, A b c, a b C, and a b c. How have these unusualtetrads arisen?
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Chapter 24 Solutions
CAMPBELL BIOLOGY-W/MOD.MASTERBIOLOGY
Ch. 24.1 - Prob. 1CCCh. 24.1 - WHAT IF? Suppose two bird species live in a...Ch. 24.2 - Summarize key differences between allopatric and...Ch. 24.2 - Prob. 2CCCh. 24.2 - WHAT IF? Is allopatric speciation more likely to...Ch. 24.2 - MAKE CONNECTIONS Review the process of meiosis in...Ch. 24.3 - 1. What are hybrid zones, and why can they be...Ch. 24.3 - WHAT IF? Consider two species that diverged while...Ch. 24.4 - Speciation can occur rapidly between diverging...Ch. 24.4 - Prob. 2CC
Ch. 24.4 - MAKE CONNECTIONS Compare Figure 13.12 with Figure...Ch. 24 - Explain the role of gene flow in the biological...Ch. 24 - Can factors that cause sympatric speciation also...Ch. 24 - What factors can support the long-term stability...Ch. 24 - Is speciation something that happened only in the...Ch. 24 - The largest unit within which gene flow can...Ch. 24 - Prob. 2TYUCh. 24 - Prob. 3TYUCh. 24 - Prob. 4TYUCh. 24 - Which of the following factors would not...Ch. 24 - Plant species A has a diploid chromosome number of...Ch. 24 - Prob. 7TYUCh. 24 - SCIENTIFIC INQUIRY DRAW IT In this chapter, you...Ch. 24 - WRITE ABOUT A THEME: INFORMATION In sexually...Ch. 24 - Prob. 10TYU
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- VISUALIZE Use two different colors to depict the unduplicated chromosomes of species C with larger chromosomes (2n = 8) and species D with slightly smaller chromosomes (2n = 10), and of their F1 hybrid. Is the hybrid likely to be fertile?arrow_forwardexplain 4 Kinetoplast DNA networkarrow_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
- GQ4arrow_forwardplease help?arrow_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_forward
- The DNA fragments show a portion of two nonsister chromatids before crossover. Suppose strand invasion occurs between regions A and B. The heteroduplex extends and forms the Holliday intermediate shown below right. Each dotted line represents one potential plane on which endonucleases could cut the intermediate. DEDE Left chromatid A Right chromatid b A B D Nonsister chromatids before crossover Holliday intermediate Match the chromatids that result from the different ways in which the Holliday intermediate can be resolved. Top chromatid B D Bottom chromatidarrow_forwardDeletions in bacterial chromosomes give the following data: Region of deletion Al Gene A activity +++ A2 АЗ A4 AS +++ (i) Where is the gene located? Explain your answer. Name the scientific term that describes the appearance of a recessive phenotype due to deletion of dominant gene. (ii) (iii) The phenotypic consequences of deletion depend on two factors. What are they? Give one example of human genetic disorder caused by chromosomal deletion by indicating the region of deletion in chromosome. (iv)arrow_forwardcan you please quickly explain?arrow_forward
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Mitochondrial mutations; Author: Useful Genetics;https://www.youtube.com/watch?v=GvgXe-3RJeU;License: CC-BY