Biology: Life on Earth (11th Edition)
11th Edition
ISBN: 9780134168296
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Textbook Question
Chapter 17, Problem 1AC
It is difficult to perform experiments that test hypotheses about how new species form. But what if people lived for a really long time? Design an experiment lasting 100,000 years to test whether allopatric separation leads to
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2)Allopatric speciation is a type of speciation process that takes place in different geographic locations.
Chapter 17 Solutions
Biology: Life on Earth (11th Edition)
Ch. 17 - The biological species concept is difficult or...Ch. 17 - 2. Which of the following does not describe a...Ch. 17 - 3. 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 - 1. A species is a group of _________ that evolves...Ch. 17 - 2. Fill in the following with the appropriate...Ch. 17 - 3. Formation of a new species occurs when two...Ch. 17 - Prob. 4FTBCh. 17 - Prob. 5FTB
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 - 4. A drug called colchicine prevents cell division...Ch. 17 - What are the two major types of reproductive...Ch. 17 - 1. It is difficult to perform experiments that...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- What is speciation? List any two events that lead to speciation?arrow_forwardWhat is a reason that speciation can occur? Organisms within a species are brought into closer proximity by a physical barrier. Organisms within an ecosystem make adaptions that involve different breeding times or interactions. Organisms develop traits that are not beneficial to their survival, and these traits are passed from generation to generation. Organisms develop traits that are beneficial and pass on the same traits to all future generations within the same species.arrow_forwardExplain the type of speciation (allopatric, parapatric, or sympatric) most likely to occur under each of the following conditions: A. A pregnant female rat is transported by an ocean liner to a new continent. B. A meadow containing several species of grasses is exposed to a pesticide that promotes nondisjunction. C. In a very large lake containing several species of fish, the water level gradually falls over the course of several years. Eventually, the large lake becomes subdivided into smaller lakes, some of which are connected by narrow streams.arrow_forward
- How does one species diverge from another? (When do we call a group a new species—and how does that process happen?) Using anole lizards or another very specific example(s), compare and contrast microevolutionary processes with speciation. As you discuss speciation, be sure to compare and contrast sympatric speciation with allopatric speciation and say whether the example you’ve chosen is allopatric or sympatric.arrow_forwardWhat are examples for gene flow? Select all that apply A distinct population of iguana drift to a new island that is already inhabited by members of the same species. A small population of humans colonizes a newly formed island. A fire drastically reduces the size of a white-tailed deer population. The remaining individuals spread out throughout the remaining forest. Wind blows pollen from one population of plants to another and cross-fertilization occurs. n An earthquake results in the formation of a canyon, splitting a population of toads apart.arrow_forwardOver time, enough genetic variations can develop within a population to cause it to undergo speciation. Identify the various mechanisms that will prevent different species from being able to reproduce successfully. Which of these mechanisms is the most influential in keeping species sperate?arrow_forward
- Speciation can occur when two populations of a species become separated from each other. What is the best explanation for why speciation occurs?arrow_forwardHybridization was not originally recognized as a mechanism of speciation by either Darwin or the researchers of the "new synthesis". However, today there are many examples of species that have originated through hybridization. What is the best explanation for why we have so many examples of species originating through hybridization? Hybridization is more likely to occur in regions where scientists have put in more effort studying speciation Hybridization has been carried out frequently by farmers attempting to produce new, better species to grow Hybridization occurs fairly regularly, and when it leads to new species only takes a few generations, which is fast enough for researchers to see fairly easily Hybridization is fairly easy to study in captivityarrow_forwardIndicate whether each of the following conditions would tend to cause speciation to occur faster (F), or if it would tend to slow down or prevent speciation (S). Put either an F or an S in each box. A. a small sub-group of a population becomes geographically isolated from the main population and experiences new environmental conditions B. a large population of herbivores lives in an environmental where the conditions have remained stable over a long period of time C. a colony of monkeys clinging to floating debris is washed out to sea by a storm and lands on an island with diverse habitats, abundant food, but without any other primates D. a large population of a migratory species splits up every year and takes different routes to their common mating territoryarrow_forward
- What notion is similar to the various types of speciation??arrow_forwardConsider this example. Shorebirds on the Eastern coast of North America feed on the mollusks and tiny crabs along the shore. Birds with tougher beaks are better adapted to crack open the shells of the mollusks, and birds with sharper beaks are better adapted to pierce the shells of crabs. Over time, the shorebirds become two separate species that no longer breed with one another. What type of speciation has occurred? A. Sympatric speciation B. Adaptive speciation C. Microevolution speciation D. Allopatric speciationarrow_forwardWhat role does geographic isolation play in the formation of a new species? Group of answer choices A.If two populations become isolated geographically, then the two populations cannot interbreed with one another. There will be gene flow between the two. This will allow the two isolated populations to evolve independently leading to new species. B. If two populations become isolated geographically, then the two populations can interbreed with one another. There will be no gene flow between the two. This will allow the two isolated populations to evolve independently leading to new species. C. None of the answers are correct D. If two populations become isolated geographically, then the two populations cannot interbreed with one another. There will be no gene flow between the two. This will allow the two isolated populations to evolve independently leading to new species.arrow_forward
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