Biology
Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 22.2, Problem 3CC
Summary Introduction

To determine: The general effects of artificial selection in reference to figure 22.9, figure 22.10, and figure 22.11 given in the textbook.

Introduction: Evolution refers to the changes which can be transferred from the parents to the offsprings. Designing of procedures and programs in order to modify traits in domesticated species is known as artificial selection. In natural selection, parents able to survive and reproduce are selected naturally, whereas in artificial selection parents with desirable traits are selected by the breeder.

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Try to outline a scenario explaining the evolution of the three species shown in panel g. Use migration, mutation, genetic drift, selection, reproductive isolation, gene flow, extinction, and many generations in your scenario. Based on your scenario, what are the components that are necessary in a population in order for it to split or diverge into two new daughter species from a single ancestor (the parent species)?
Discuss the difference between natural selection drift (the bottleneck effect and founder effect). Give an example
VISUAL SKILLS Consider a population in which heterozygotes at a certain locus have an extreme phenotype(such as being larger than homozygotes) that confersa selective advantage. Compare this description to themodels of selection modes shown in Figure 23.13. Doesthis situation represent directional, disruptive, or stabilizing selection? Explain your answer.
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