Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
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Chapter 22.3, Problem 2R
Summary Introduction
To review:
The geographical distribution of closely related species in case allopatric
Introduction:
Speciation is the process of formation of distinct species through the process of evolution. There are four types of speciation based on their isolation. They are allopatric, peripatric, parapatric, and sympatric. The speciation, which results from the division of the population by the physical barrier, is called the allopatric speciation.
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What are the most common mechanisms of sympatric speciation and in which major group of organisms does this happen most often? Distinguish between sympatric, allopatric and parapatric speciation. What is considered the (far) more common mechanism of species formation? What does "gene flow" between populations mean?
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