Biology: Life on Earth
10th Edition
ISBN: 9780321729712
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: Benjamin Cummings
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Chapter 16, Problem 2RQ
Review the material on the possibility of sympatric
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Which of the following is least likely to be a process associated with sympatric speciation?
A.) specialization on different food resources
B.) specialization on different habitats
C.) mutations that cause differences in pheromones
D.) mutations that cause changes in ploidy
a. What are the various types of reproductive isolating mechanisms that can lead to speciation?
b. What are the different modes of speciation?
c. Explain how evolution produce the tremendous amount of diversity among organisms.
Can speciation occur without complete physical separation of populations?
Chapter 16 Solutions
Biology: Life on Earth
Ch. 16 - 1. A species is a group of _________ that evolves...Ch. 16 - 2. Fill in the following with the appropriate...Ch. 16 - 3. Formation of a new species occurs when two...Ch. 16 - Prob. 4FTBCh. 16 - Prob. 5FTBCh. 16 - Define the following terms: species, speciation,...Ch. 16 - Review the material on the possibility of...Ch. 16 - Many of the oak tree species in central and...Ch. 16 - 4. A drug called colchicine prevents cell division...Ch. 16 - What are the two major types of reproductive...
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- Part A: To which other species of storm-petrel is H. matsudairae, the cold-season breeder on Japan, least closely related? A. H. monteiroi B. H. monorhis C. H. tristrami Part B: What does the phylogeny suggest about a primary reproductive barrier that exists between H. matsudairae and H. monorhis to allow speciation to occur? A. Mechanical B. Gametic barrier C. Temporal D. Nesting on different islands Part C: What does the phylogeny suggest about the likely mechanism of speciation between H. matsudairae and H. monorhis in Japan? A. Allopatric speciation B. Sympatric speciation What's the rationale? What does the phylogeny suggest about the likely mechanism of speciation between H. hornbyi and H. homochroa in the eastern Pacific? A. Allopatric speciation B. Sympatric speciation What's the rationale?arrow_forwardPart A: To which other species of storm-petrel is H. matsudairae, the cold-season breeder on Japan, least closely related? A. H. monteiroi B. H. monorhis C. H. tristrami Part B: What does the phylogeny suggest about a primary reproductive barrier that exists between H. matsudairae and H. monorhis to allow speciation to occur? A. Mechanical B. Gametic barrier C. Temporal D. Nesting on different islandsarrow_forwardTwo hundred years ago, the fly species Rhagoletis pomonella only laid its eggs on fruit of the hawthorn tree. Today, different "host races" of R. pomonella lay their eggs on hawthorns OR apples. Apples occur within the range of hawthorns, so divergence between apple flies and hawthorn flies could be the first step in sympatric speciation. Choose the evidence that would suggest that R. pomonella is currently undergoing sympatric speciation. Check ALL answers that apply. A. Apple flies and hawthorn flies are able to form fertile hybrids. B. Apple flies and hawthorn flies are physically indistinguishable from each other. C. Apple flies typically mate with apple flies, and hawthorn flies typically mate with hawthorn flies. D. Apple flies and hawthorn flies emerge from their hosts at different times of the year.arrow_forward
- Is allopatric speciation more likely to occur on an island close to a mainland or on a more isolated island of the same size? Explain your prediction.arrow_forwardExplain into details the concept of speciation .arrow_forwardWrite a short essay describing the roles ofmutation, migration, and selection in bringing about speciation.arrow_forward
- Scientists studying reproduction compared three closely related species of bagworm moths. The reproductive methods for these species are given in the table. Which of the following research questions would provide additional information about the population level impacts of meiosis and sexual reproduction? A - How do the number of D. charlottae offspring compare with the number of S. rupicolella offspring? B - Do D. charlottae and S. rupicolella populations express greater genetic diversity than D. fennicella populations? C - Are the offspring of D. fennicella genetically unique compared to the offspring of D. charlottae and S. rupicolella? D - Does crossing-over in D. fennicella result in increased genetic variation compared to D. charlottae and S. rupicolella?arrow_forwardn which situation would it make sense to use the morphological species concept? When you are able to collect data about how individuals in your study use their habitat, but you are unable to determine if they interbreed When working with fossils from extinct organisms When you only have genetic data about each organism in your study When you are not able to collect data about how individuals in your study use their habitat, but you are able to collect reproductive dataarrow_forwardIN AN ILLUSTRATIVE MANNER, GIVE EXAMPLES OF ORGANISMS OR INSTANCES WHEREIN REPRODUCTIVE ISOLATING MECHANISMS LEAD TO SPECIATION. IDENTIFY AT LEAST TWO (2) SPECIATION. BRIEFLY DESCRIBE EACH MECHANISM OF SPECIATION.arrow_forward
- Speciation is shown in the Phylogenetic Tree below. True Falsearrow_forwardWhat factors must be present for allopatric speciation to occur?arrow_forwardSpeciation can be initiated when grasses colonise contaminated soils at former mine sites from adjacent benign soils. What type of speciation is occuring here (allopatric, parapatric or sympatric)? explain your answer.arrow_forward
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