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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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 number of 8. Plant species B has a diploid number of 4. A new species, C, arises as an allopolyploid from A and B. The diploid number for species C would probably be..
Multiple choice (one answer is correct)
a.8
b.6
c.4
d.12
e.The diploid number can be any even number between 4 and 8
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 areas
Which type of hybrid zone would lead to speciation?
A. a hybrid zone
b. stable hybrid zone
c. A fusion hybrid zone
d. reinforcement hybrid zone
e. hybird vigor
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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- Hybridization between incompletely isolated populations a. always leads to reinforcement due to the inferiority of hybrids. b. can serve as a mechanism for preserving gene flow between populations, thus preventing speciation. c. only occurs in plants. d. never affects rates of speciation.arrow_forwardWhich could lead to allopatric speciation by two populations of snail? Group of answer choices A. creation of a new mountain range between two populations B. a mutation in all members of one population which prevents gamete fusion between the two populations C. a change in breeding time of one population D. a change in mating behavior in one population but not in the otherarrow_forwardTwo species of plants grow along a mountain slope. One species grows mainly at low altitudes, and the other grows mainly at higher altitudes. Occasionally, the two species hybridize producing hybrids that are better suited than the parental species to grow at intermediate altitudes. This scenario would lead to Question 7 options: reinforcement autopolyploidy a stable hybrid zone hybrid breakdown the fusion of the two speciesarrow_forward
- Which is a criticism of sympatric speciation? A.) many cases of sympatric speciation are actually microallopatry B.) allopatric speciation is less common and scientists should focus more attention on locating additional examples C.) sympatric speciation is only associated with changes in ploidy, a process so rare that it's relatively unimportant D.) since most examples of sympatric speciation involve post zygotic isolation, hybridization nearly always results in their reversalarrow_forwardIf reinforcement is weak and hybrids are not completely infertile, a. genetic divergence between populations may be overcome by gene flow. b. speciation will occur 100% of the time. c. gene flow between populations will be impossible. d. the speciation will be more likely than if hybrids were completely infertile.arrow_forwardWhich process in a hybrid zone increases the likelihood of speciation? A. stability – when a hybrid zone remains the same B. reinforcement – when a hybrid zone widens and fewer hybrids are formed C. convergence – when a hybrid zone narrows and more hybrids are formed D. fusion – when a hybrid zone disappears and separate species fuse into onearrow_forward
- Which of the following would result in allopatric speciation by dispersal? A. A river separating a previously contiguous population of salamanders B. A receding water table separating a population of frogs into two separate wetlands C. Finches colonizing an island exposed by water level changes in a reservoir D. A population of trees being split in two by an advancing glacierarrow_forwardWhich of the following is a problem with using the Biological Species Concept? A. it doesn't apply to asexual populations B. It doesn't apply to tropical organisms C. it doesn't take into account reproductive compatibility D. there are no issues with this species conceptarrow_forwardThe formation of polyploids is common in plants and can abruptly produce a new species. This is an example of a. allopatric speciation. c. sympatric speciation. b. parapatric speciation. d. all of the above.arrow_forward
- Secondary contact after divergence rarely results in? A. creation of a hybrid zone B. formation of a new species C. the rapid decline of both populations D. extinction of one populationarrow_forwardAllopractric speciation can occur because of: 1. _______________________________________ 2. _______________________________________ 3. _______________________________________arrow_forwardThis type of species isolation is being used during allopatric speciation. Group of answer choices: A- behavioral B- habitat C- gametic D- mechanical Please give me the answer along with the reason. I'll definitely give a like.arrow_forward
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