Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Textbook Question
Chapter 17, Problem 5MC
In the initial phase of allopatric
- a. competition.
- b. hybrid inviability.
- c. geographical isolation.
- d. ecological isolation.
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Students have asked these similar questions
A 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 populations
Which of the following is an example of postzygotic reproductive isolation?a. Sperm of species A dies in the oviduct of species B before fertilization can take place.b. Hybrid zygotes between species A and B are spontaneously aborted early indevelopment.c. The mating seasons of species A and B do not overlap.d. Males of species A are not attracted to the pheromones produced by the females ofspecies B.
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.
Chapter 17 Solutions
Biology
Ch. 17.1 - One way to determine the number of species on...Ch. 17.1 - Prob. 1TCCh. 17.1 - The tiny frog paedophryne amauensis was discovered...Ch. 17.1 - describe how biologists define species and explain...Ch. 17.1 - describe the biological species concept and...Ch. 17.1 - list some reasons why it can be hard to tell...Ch. 17.2 - describe the main types of premating and...Ch. 17.2 - provide examples of each type of mechanism?Ch. 17.3 - Make a list of events or processes that could...Ch. 17.3 - How might conservation scientists use the map...
Ch. 17.3 - It is not surprising that the forests of New...Ch. 17.3 - Prob. 3TCCh. 17.3 - Prob. 4TCCh. 17.3 - Prob. 5TCCh. 17.3 - One possible explanation for the distinctive...Ch. 17.3 - describe the two general steps that are required...Ch. 17.3 - explain the difference between allopatric and...Ch. 17.3 - explain adaptive radiation and describe the...Ch. 17.3 - interpret an evolutionary tree diagram?Ch. 17.4 - If specialization puts a species at risk for...Ch. 17.4 - Prob. 1CTCh. 17.4 - describe the main causes of extinction?Ch. 17.4 - Prob. 2CYLCh. 17.4 - Given that genetic isolation is the first step in...Ch. 17 - The biological species concept is difficult or...Ch. 17 - Which of the following does not describe a...Ch. 17 - All instances of speciation require a. genetic...Ch. 17 - Analysis of Rhagoletis fly populations in North...Ch. 17 - In the initial phase of allopatric speciation,...Ch. 17 - A species is a group of ________ that evolves...Ch. 17 - Fill in the following with the appropriate...Ch. 17 - Formation of a new species occurs when two...Ch. 17 - The process by which many new species arise in a...Ch. 17 - A species may be at higher risk of extinction if...Ch. 17 - Define the following terms: species, speciation,...Ch. 17 - Many of the oak tree species in central and...Ch. 17 - Review the material on the possibility of...Ch. 17 - A drug called colchicine prevents cell division...Ch. 17 - What are the two major types of reproductive...Ch. 17 - It is difficult to perform experiments that test...
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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 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_forwardIf two species of holly (genus Ilex ) flower during different months, their gene pools may be kept separate by: a. mechanical isolation. b. ecological isolation. c. gametic isolation. d. temporal isolation. e. behavioral isolation.arrow_forward
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- In nature, when a lone male lion encounters a pride (a group of lions with a male leader), the two males will often fight to become head of the pride. It has been documented that if the foreign lion wins the battle, he will usually kill the offspring of the weaker lion’s pride. This natural selection process best describes; Select one: a. Fitness within species b. Bottleneck effect c. Macroevolution d. Microevolution e. Speciationarrow_forwardWhich of the following could result in allopatric speciation? A. Two populations of a species are separated by a river that they are unable to cross. B. Two populations of a species are separated by a field that is too dry during the summertime. C. One group within a population mates during the evenings and another during the mornings. D. One group within a population develops a new mating ritual that is not recognized by the other.arrow_forwardWhich 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.arrow_forward
- Which of the following is a good description of Sympatric speciation? A. Speciation without geographic isolation B. Changes in sequence of DNA of an organism C. Speciation due to geographical isolation D. The change in the genetic characteristics of a population of organisms over timearrow_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_forwardWhich of the following traits does not describe a r-selected species? A. rapid development B. low parental investment C. high reproductive rates D. short life spans E. late maturationarrow_forward
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