Campbell Biology In Focus
2nd Edition
ISBN: 9780134203072
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Textbook Question
Chapter 22, Problem 6TYU
Plant species A has a diploid number of 12. Plant species B has a diploid number of 16. A new species, C, arises as an allopolyploid from A and B. The diploid number for species C would probably be
- A. 14.
- B. 16.
- C. 28.
- D. 56.
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Plant species A has a diploid chromosome number of 12. Plantspecies B has a diploid number of 16. A new species, C, arises asan allopolyploid from A and B. The diploid number for speciesC would probably be(A) 14. (B) 16. (C) 28. (D) 56.
Options include:
A. 20
B. 14 or 16
C. 4
D. 12 or 18
Species A has 2 n = 16 and species B has 2 n = 14. How many chromosomes would be found in an allotriploid of these two species?
a. 21 or 24 b. 42 or 48 c. 22 or 23 d. 45
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 - 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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- The goldenrod gall fly mates and lays its eggs on the goldenrod plant and the larva live inside the plant. When a new species of goldenrod (goldenrod B) moves into the range of the fly some of the flies move to goldenrod B. How does this process allow for sympatric speciation of the flies? Group of answer choices A. the two plants have different chromosome numbers B. the flies only reproduce on their host plant C. hybrids are always more successful than either type of fly D. a predator keeps the two types of flies separated E. the two plants occur in different geographic areasarrow_forwardA prezygotic barrier prevents (a) the union of egg and sperm (b) reproductive success by an interspecific hybrid (c) the development of the zygote into an embryo (d) allopolyploidy from occurring (e) changes in allometric growtharrow_forwardWhich of the three phylogenetic trees of the Drosophila species is different from the other two? a. D. simulans b. C. D. sechellia D. melanogaster D. sechellia D. simulans D. simulans Tree 1 Tree 2 Tree 3 D. melanogaster D. melanogaster D. sechellia D. pseudoobscura D. pseudoobscura D. persimilis D. persimilis D. persimilis D. pseudoobscuraarrow_forward
- A large plant arose in a natural population. Qualitatively, it looked just the same as the others, except much larger. Is it more likely to be an allopolyploidarrow_forwardMembers of two separate species mate and produce hybrid offspring that fail to thrive in the environment. The hybrid genotypes do not suit the hybrid organism for survival using any given niche. Eventually, the hybrid genotypes disappear from the environment. This would be due to: A. hybrid inviability B. hybrid sterility C. gametic incompatibility D. pre-zygotic isolation E. infra-gametic disruptionarrow_forwardA plant breeder found a species of flowering plant with very attractive flowers growing wild in a field and she thought it would appeal to her customers. Some of the plants of this species had red flowers, some white flowers, and some pink flowers. While she would like to be able to offer her customers all three colors of flowers, she only has permission from the landowner to dig up one plant to bring back to the nursery as breeding stock. What would be the best thing for her to do? Top of Form Take a white flowering plant since the white allele could be masking the pink allelle. Take a pink flowering plant since it is likely to carry both the red and white alleles. Take a red flowering plant since it could produce all three colors eventually. Take a red flowering plant since the red allele is likely the dominant one.arrow_forward
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