Biology
Biology
12th Edition
ISBN: 9781260494570
Author: Raven, Peter
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 22, Problem 1IQ
Summary Introduction

To determine: Theeffect of sympatric and allopatric speciation on adaptive radiation.

Introduction: Evolution is the change in the phenotypic or genotypic characters of the species as a whole with passing generations; this can take place due to several internal and external factors.

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Explanation of Solution

Adaptive radiation is an important concept in evolutionary biology. The adaptive radiation is one of the few processes that allow the divergence or convergence of two or more species. Adaptive radiation requires both allopatric and sympatric speciation along with adaptation to different habitats. Speciation mainly occurs allopatrically and leads to rising of species that colonize other islands producing multiple species per island.

Summary Introduction

To determine: The relationship between the sympatric speciation and character displacement.

Introduction: Evolution of organism results into various types of accumulations in the genes of an organism that enable an individual to adapt in the changing environment.

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Explanation of Solution

Sympatric speciation also occurs during the course of multiple generation because of disruptive selection and can result in the population to contain individuals exhibiting two different phenotypes. The instantaneous sympatric speciation occurs when an individual born is reproductively isolated from all other members of its species. A mutation that would cause an individual to be different from other members of species result in pleiotropic effects and subsequently end in adaptive radiation.

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