Campbell Biology in Focus (2nd Edition)
2nd Edition
ISBN: 9780321962751
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.
Some plants reproduce vegetatively and have a life
cycle that features the alternation of haploid and
diploid generations. The
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A. gametophytehaploidsporophyte diploid
B. sporophyte haploidgametophytediploid
C. sporophyte diploid gametophytetriploid
D. gametophytehaploidsporophyte triplod
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Which of the salt-marsh grasses is a polyploid? a. Spartina maritima b. Spartina alterniflora c. Hybrid between Spartina maritima and Spartina alterniflora d. Spartina anglica e. Both c and d
Chapter 22 Solutions
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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- 3) Allopolyploidy involves a.a genetic divergence that results in nonviable offspring. b.a decrease in chromosome number within a single species. c.an increase in chromosome number following hybridization of different species. d.an increase in chromosome number within a single species.arrow_forwardSpecies I is diploid (2 n = 8) with chromosomes AABBCCDD; related species II is diploid (2 n = 8) with chromosomes MMNNOOPP. What types of chromosome mutations do individuals with the following sets of chromosomes have? a. AAABBCCDD b. MMNNOOOOPP c. AABBCDD d. AAABBBCCCDDD e. AAABBCCDDD f. AABBDD g. AABBCCDDMMNNOOPP h. AABBCCDDMNOParrow_forwardDefine the following terms related to alterations of generations: a.Haploid b.Diploidarrow_forward
- In agriculture, an advantage of triploidy in plants is that the plants area. more fertile.b. often seedless.c. always disease-resistant.d. all of the above.arrow_forwardAlternation of generations describes which of the following? a. The haploid form can be multicellular; the diploid form is unicellular. b. The haploid form is unicellular; the diploid form can be multicellular. c. Both the haploid and diploid forms can be multicellular. d. Neither the haploid nor the diploid forms can be multicellular.arrow_forwardIn a flower, Letter P for purple is dominant over p for white. What is the phenotype of a heterozygote flower? A. PPP B. Purple C. Pp D. whitearrow_forward
- A 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_forwardIn Iowa, a company called Team Corn works to ensure that fields of seed corn outcross so that hybrid vigor can be maintained. They do this by removing the staminate (that is, pollen-producing) flowers from the corn plants. In an attempt to put Team Corn out of business, you would like to develop genetically engineered corn plants that a. contain Z genes to prevent germination of pollen on the stigmatic surface. b. contain S genes to stop pollen tube growth during selffertilization. c. express B-type homeotic genes throughout developing flowers. d. express A-type homeotic genes throughout developing flowers.arrow_forwardWhat is the ploidy of two daughters of a dividing cell of a hornwort’s gametophyte? Select one: a. aploid b. diploid c. none of these choices d. haploid e. triploid f. tetraploidarrow_forward
- What will be the phenotype of the fly that grows from the fertilizer cell show below?arrow_forwardA single plant twice the size of others in the same populationsuddenly appears. Normally, plants of that species reproduceby self-fertilization and by cross-fertilization. Is this newgiant plant simply a variant, or could it be a new species? Howwould you determine which it is?arrow_forwardCorn has 10 chromosomes per set, and the sporophyte of the species is diploid. If you performed a karyotype, what is the totalnumber of chromosomes you would expect to see in each of thefollowing types of cells?A. A leaf cellB. The sperm nucleus of a pollen grain C. An endosperm cell after fertilizationD. A root cellarrow_forward
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