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Biology: The Dynamic Science (Mind...

4th Edition
Peter J. Russell + 2 others
ISBN: 9781305389892

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BuyFindarrow_forward

Biology: The Dynamic Science (Mind...

4th Edition
Peter J. Russell + 2 others
ISBN: 9781305389892
Textbook Problem

Apply Evolutionary Thinking Five processes can foster microevolutionary change: gene flow, genetic drift, mutation, natural selection, and nonrandom mating (see Section 21.3). Which of those processes might contribute to the evolution of Batesian mimicry in two butterfly species? Would the same processes affect both the mimic and the model similarly? Which processes might have contributed to the evolution of the mutualistic relationship between ants and acacia trees, and how would their action on the two mutualists differ?

Summary Introduction

To review:

The processes that might contribute to the evolution of Batesian mimicry in two butterfly species and would the same processes affect both the mimic and the model similarity. Also, determine the process that contributes to the evolution of the mutualistic relationship between ants and acacia trees, and the way in which their action on the two mutualistic differ.

Introduction:

The microevolutionary processes include changes like gene flow, genetic drift, mutation, natural selection, and nonrandom mating. These phenomenons affect the relationships and interactions between the species and therefore help them to evolve. The genetic drift is drastic extinction of a species by any incident, while gene flow is a movement of a species from its native place onto another land.

Mutation refers to an occurrence of any random change into the genes of an individual. Natural selection is the selection of better species among the existing population and nonrandom mating is the mating between two organisms of the same population.

Explanation

Batesian mimicry is when an animal mimics a harmful species to avoid being eaten by the predator. The microevolutionary process that has contributed to the process is natural selection. The butterflies have adopted the mimicry to protect themselves and hence survive longer. The same process would not affect the mimic and the model, as the model is already safe from the predator. The mimic saves itself from the predator by mimicking the model...

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