Evolution
Evolution
4th Edition
ISBN: 9781605356051
Author: Douglas Futuyma, Mark Kirkpatrick
Publisher: SINAUER
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Chapter 3, Problem 2PDT
Summary Introduction

To determine: Whether mutation in the insects exposed to insecticide is an adaptation.

Introduction: Adaption is a natural phenomenon and is a distinguishing character of the organisms that are evolved by natural selection. Therefore, adaption is also an evolutionary process. Mutation is the alteration in the genetic constitution of the organism which causes morphological as well as genetic changes in an organism.

Summary Introduction

To explain: Whether resistance to insecticide after some generations of the insect is an adaptation.

Introduction: Resistance to insecticide occurs due to the natural selection that is passed on to next generations, making them also resistant. An organism adapts to the change with time and according to the advantage of the character.

Summary Introduction

To determine: Whether the variation is an adaptation in the population of insects that are never exposed to the insecticide.

Introduction: Variation to insecticide is caused due to mutation. This mutation causes genetic variation in the insects by making them resistant to the insecticide. There are various organisms that may not undergo perfect adaptations because of the functional compromise or due to the mutations that enable the perfect adaptational process that has not been available.

Summary Introduction

To determine: Whether the variation is an adaptation in the population of insects that are polymorphic for two alleles of resistance.

Introduction: Variation to insecticide is caused due to mutation. This causes genetic variation in the insect population that is polymorphic for two alleles, and each of the allele is resistant against one of two pesticides that is alternately applied.

Summary Introduction

To determine: Whether the resistance to two insecticides in the insects that are polymorphic for two alleles is an adaptation.

Introduction: Variation to insecticide is caused due to mutation. This causes genetic variation in the insect population that is polymorphic for two alleles, and each of which confers resistance against one of two pesticides that is alternately applied.

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