Answered: MECHANISMS EXAMPLES 1. 1. Geographical…

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Description: act 2 MECHANISMSEXAMPLES1.1. Geographical Isolation3.1.2.2. Temporal/Seasonal Isolation1.2.3. Behavioral Isolation1.2.4. Mechanical Isolation31.2.5. Gametic Isolation32.3.

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Biology

MECHANISMS EXAMPLES 1. 1. Geographical Isolation 3. 1. 2. 2. Temporal/Seasonal Isolation 1. 2. 3. Behavioral Isolation 1. 2. 4. Mechanical Isolation 3 1. 2. 5. Gametic Isolation 3 2. 3.

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter57: Biological Diversity And Conservation Biology

Section: Chapter Questions

Problem 11TYU: Why might captive-breeding programs that reintroduce species into natural environments fail?

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The pesticide DDT was widely used in the 1940s as a method of insect control. In the late 1950s the first DDT-resistant mosquitoes were discovered, and eventually DDT-resistant mosquitoes were found globally. When DDT is used now, the development of DDT resistance in mosquito populations occurs in months rather than years.Which of the following best explains the observations concerning DDT resistance in mosquitoes? * nd 2 school The proportion of DDT-resistant mosquitoes in a population remains constant due to the metabolic costs of DDT utilization DDT is a chemical signal that delays normal reproductive cycles in many mosquito populations. Natural selection favors DDT-resistant mosquitoes that are already present in a population when DDT exposure occurs. Competition for limited resources causes mosquitoes to migrate to geographical areas that have richer supplies of DDT. A population of 1.492 finches is introduced to a rainforest. Over the next year, the finches showa death rate of…
1. Explain how a phenotype can increase, decrease, or have no effect on an organisms fitness. 2. Explain what would happen if a particular hair color suddenly gave an advantage under existing environmental conditions. 3. What components in an environment may be different on either side of the barrier? 4. What does the term "reproductive isolation" refer to? 5. Can you hypothesize how three organisms can have similar structures, yet they serve different functions? 6. It would seem that wisdom teeth no longer serve a purpose. Can you propose what purpose they served earlier in our evolution? 7. Explain why the pharyngeal slit becomes the Eustachian tube in humans and a gill in fish.
Behavioral isolation is considered which type of reproductive barrier? a prezygotic b postzygotic c overlapping d heritable
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Why might captive-breeding programs that reintroduce species into natural environments fail?
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