Genetics: Analysis and Principles
6th Edition
ISBN: 9781259616020
Author: Robert J. Brooker Professor Dr.
Publisher: McGraw-Hill Education
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Chapter 29.1, Problem 4COMQ
Summary Introduction
Introduction:
The development of a new species from a preexisting species due to evolution is known as
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Which of the following may be true of two species that are a result of allopatric speciation? Select all that apply.
a
They will be genotypically similar.
b
They will be phenotypically similar.
c
They can produce viable offspring.
d
They will be geographically isolated.
While donkeys and horses have ignored each other historically in the wild, hybrids can be made through artificial insemination. The resulting hybrids are unusual in that they are generally viable, but always sterile. Because of their sterility, a blended lineage of the two animals cannot exist. What evolutionary force is this an example of?
A. Prezygotic barrierB. Postzygotic barrierC. Allopatric SpeciationD. Sympatric Speciation
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.
Chapter 29 Solutions
Genetics: Analysis and Principles
Ch. 29.1 - Prob. 1COMQCh. 29.1 - Prob. 2COMQCh. 29.1 - 3. A pair of birds flies to a deserted island and...Ch. 29.1 - Prob. 4COMQCh. 29.2 - 1. Phylogenetic trees are based on
a. natural...Ch. 29.2 - Prob. 2COMQCh. 29.2 - An approach that is used to construct a...Ch. 29.2 - 4. Horizontal gene transfer is a process in which...Ch. 29.3 - Prob. 1COMQCh. 29.3 - Prob. 2COMQ
Ch. 29.3 - When the chromosomes of closely related species...Ch. 29 - 1. Discuss the two principles on which evolution...Ch. 29 - 2. Evolution, which involves genetic changes in a...Ch. 29 - Prob. 3CONQCh. 29 - Prob. 4CONQCh. 29 - 5. Would each of the following examples of...Ch. 29 - Distinguish between anagenesis and cladogenesis....Ch. 29 - 7. Describe three or more genetic mechanisms that...Ch. 29 - Explain the type of speciation (allopatric,...Ch. 29 - Prob. 9CONQCh. 29 - Prob. 10CONQCh. 29 - Discuss the major differences among allopatric,...Ch. 29 - Prob. 12CONQCh. 29 - Prob. 13CONQCh. 29 - Would the rate of deleterious or beneficial...Ch. 29 - 15. Which would you expect to exhibit a faster...Ch. 29 - Prob. 16CONQCh. 29 - 17. Plant seeds contain storage proteins that are...Ch. 29 - Take a look at the -globin and -globin amino acid...Ch. 29 - Compare and contrast the neutral theory of...Ch. 29 - Prob. 20CONQCh. 29 - 21. As discussed in Chapter 27, genetic variation...Ch. 29 - Prob. 22CONQCh. 29 - Two populations of snakes are separated by a...Ch. 29 - 2. Sympatric speciation by allotetraploidy has...Ch. 29 - 3. Two diploid species of closely related frogs,...Ch. 29 - A researcher sequenced a portion of a bacterial...Ch. 29 - F1hybrids between two species of cotton,Gossypium...Ch. 29 - 6. A species of antelope has 20 chromosomes per...Ch. 29 - Prob. 7EQCh. 29 - 8. Prehistoric specimens often contain minute...Ch. 29 - From the results of the experiment of Figure...Ch. 29 - InChapter 23, a technique called fluorescence in...Ch. 29 - Prob. 11EQCh. 29 - 12. Discuss how the principle of parsimony can be...Ch. 29 - 13. A homologous DNA region, which was 20,000 bp...Ch. 29 - Prob. 14EQCh. 29 - Prob. 1QSDCCh. 29 - 2. Compare the forms of speciation that are slow...Ch. 29 - 3. Do you think that Darwin would object to the...
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- The origin of a new plant species by hybridization, coupled with accidents during nuclear division, is an example of Group of answer choices A.habitat selection B.allopatric speciation C.sympatric speciation D.autopolyploidyarrow_forwardWhich of the following is not an event that can contribute to allopatric speciation? a. A mountain range forms and splits two populations into populations that begin to turn into new species. b. A subset of individuals disperse to a far away island and begin to turn into a new species. c. Two populations breed in the same location but at different times, and therefore begin to turn into two new species. d. A river splits a population into two populations and the two populations begin to diverge on either side of the river. e. All of these are potential contributors to allopatric speciation.arrow_forwardProblems with the biological species concept include the fact that a. many species reproduce asexually. b. postzygotic isolating mechanisms decrease hybrid viability. c. prezygotic isolating mechanisms are extremely rare. d. All of the choices are correct.arrow_forward
- 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 8arrow_forwardThe 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_forwardSpecies recognized by the phylogenetic species concept a. sometimes also would be recognized as species by the biological species concept. b. are sometimes paraphyletic. c. are characterized by symplesiomorphies. d. are more frequent in plants than in animals.arrow_forward
- 1) In allopatric speciation, geographic separation of two populations a.reduces the relative fitness of hybrid offspring. b.is sufficient for speciation to occur. c.allows gene flow between them. d.inhibits gene flow between them.arrow_forwardA mountain range divides a freshwater snail species into two large isolated populations. Erosion eventually lowers the range and brings the two populations together again, but when they mate, the resulting hybrids all produce sterile young. This scenario is an example of: O A. allopatric speciation by vicariance. O B. sympatric speciation. C. parapatric speciation. D. allopatric speciation by peripheral isolation. « » A Moving to another question will save this response. 8:02 AM 11/10/20 a 18 hp 近arrow_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_forward
- In the western United States, populations of an annual plant can be found almost continuously from San Diego to Seattle. Even though individuals from the San Diego and Seattle populations never come into contact, they can still be considered part of the same species under the ________ species concept because they can potentially interbreed. A.biologicalB.morphologicalC.lineageD.habitatarrow_forwardA pair of birds flies to a deserted island and establishes a colony. Over time, this population evolves into a new species. This is an example of a. allopatric speciation. c. sympatric speciation. b. parapatric speciation. d. all of the above.arrow_forwardA defining characteristic of sympatric speciation is a.The appearance of new species in the midst of old ones b.Asexually reproducing populations c.Geographic isolation. d.Large populationsarrow_forward
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