Biology (MindTap Course List)
11th Edition
ISBN: 9781337392938
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
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Textbook Question
Chapter 20.2, Problem 2LO
Explain the significance of reproductive isolating mechanisms and distinguish among the various prezygotic and postzygotic barriers.
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Describe and distinguish between the several types of reproductive isolating mechanisms.
Distinguish between prezygotic and postzygotic isolating mechanisms, and provide an example of each.
Prezygotic barriers include all of the following, except for
Chapter 20 Solutions
Biology (MindTap Course List)
Ch. 20.1 - Describe the biological species concept and list...Ch. 20.1 - Prob. 1CCh. 20.1 - Prob. 2CCh. 20.1 - Prob. 3CCh. 20.2 - Explain the significance of reproductive isolating...Ch. 20.2 - What barriers prevent wood frogs and leopard frogs...Ch. 20.2 - How is temporal isolation different from...Ch. 20.2 - Prob. 3CCh. 20.2 - Of which postzygotic barrier is the mule an...Ch. 20.3 - Prob. 3LO
Ch. 20.3 - Explain the mechanisms of sympatric speciation and...Ch. 20.3 - What are five geographic barriers that might lead...Ch. 20.3 - Prob. 2CCh. 20.3 - Prob. 3CCh. 20.4 - Prob. 5LOCh. 20.4 - Prob. 1CCh. 20.5 - Define macroevolution.Ch. 20.5 - Discuss macroevolution in the context of novel...Ch. 20.5 - Prob. 8LOCh. 20.5 - Why are evolutionary novelties important to...Ch. 20.5 - Prob. 2CCh. 20.5 - Prob. 3CCh. 20.5 - What is the relationship between mass extinction...Ch. 20 - A prezygotic barrier prevents (a) the union of egg...Ch. 20 - The reproductive isolating mechanism in which two...Ch. 20 - Interspecific hybrids, if they survive, are (a)...Ch. 20 - The first step leading to allopatric speciation is...Ch. 20 - The pupfishes in the Death Valley region are an...Ch. 20 - Which of the following evolutionary processes is...Ch. 20 - According to the punctuated equilibrium model, (a)...Ch. 20 - The evolutionary conversion of reptilian scales...Ch. 20 - Adaptive radiation is common following a period of...Ch. 20 - The Hawaiian silverswords are an excellent example...Ch. 20 - VISUALIZE Use two different colors to depict the...Ch. 20 - Prob. 12TYUCh. 20 - EVOLUTION LINK Could hawthorn and apple maggot...Ch. 20 - Prob. 14TYUCh. 20 - EVOLUTION LINK Examine Figure 20-2c and predict...
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- What are prezygotic and postzygotic barriers? Discuss the concept.arrow_forwardWhat would a study of both monozygotictwins raised together and monozygotictwins raised apart tell you about environmentalinfluences?arrow_forwardClassify the examples as pre‑zygotic or post‑zygotic barriers.arrow_forward
- Explain what is meant by the term ‘secondary contact’. Describe two possible outcomes of secondary contact, including the degree of reproductive isolation involved in each.arrow_forwardDifferentiate between how prezygotic and postzygotic isolating mechanisms lead to reproductive isolation.arrow_forwardCompare and contrast reproductive strategies and forms ofsexual selection.arrow_forward
- What are prezygotic and postzygotic barriers?arrow_forwardBehavioral isolation is considered which type of reproductive barrier? a prezygotic b postzygotic c overlapping d heritablearrow_forwardAll of the following scenarios are examples of barriers that distinguish separate species. Which is not a post-zygotic barrier? * Two species of ladybugs live in the same habitat. Although they mate at the same time of year, their genitals are physically incompatible. Two species of fish inhabit the same stream. They are capable of mating and producing healthy offspring. The offspring, however, are infertile. Two species of opossums inhabit the same forest. Although they are capable of mating, no offspring ever survive development. Two species of mice coexist in a forest habitat. They are capable of mating and producing offspring. The offspring, however, are frail and die young.arrow_forward
- Explain the concept of coevolution.arrow_forwardWhat happens if species with incomplete reproductive barriers come into contact with one another?arrow_forwardDirection: For each of the five examples below, give the name of the isolating mechanism and specify if it is prezygotic or postzygotic isolation. In some bee populations, only large bees are big enough to unfold flower petals and obtain nectar and pollen. A cross between two fish species occurs but development only occurs up to 16-cell stage. In drosophila, when sperm from one species enters the other species, the sperm is immobilized and unable to fertilize the Fireflies have a unique lighting pattern. The frequency of lighting is species specific. Fireflies in the same area will not mate with those having a different lighting frequency. 5. Two species of butterflies are found in northern Michigan, but one species is found only near rivers and streams, the other near lakesarrow_forward
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