BIOLOGY
BIOLOGY
5th Edition
ISBN: 9781265202859
Author: BROOKER
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Chapter 23.2, Problem 1CC
Summary Introduction

To determine: The way in which directional selection affects genetic diversity in a population of mice on an island over the short run.

Introduction: Directional selection can be defined as a type of natural selection which favors an extreme phenotype over other phenotypes. It shifts frequency of allele in the direction of extreme phenotype over the time.

Summary Introduction

To determine: The way in which directional selection affects genetic diversity in a population of mice on an island over the long run.

Introduction: Directional selection can be defined as a type of natural selection which favors an extreme phenotype over other phenotypes. It shifts frequency of allele in the direction of extreme phenotype over the time.

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frequency of adaptive heritable traits in a population changes as REQUIREMENTS FOR NATURAL SELECTION TO OCCUR: 17a. Assuming that both types of pom-poms are present in the population, what do you think would happen to the pom-pom population if the black forest experienced a prolonged drought so all the trees died and the habitat became red grassland? 17b. Next, think about an alternative scenario. Suppose that natural selection over many generations had eliminated all the red pom-poms in the black forest habitat so only black pom- poms survived. After that, a prolonged drought resulted in this habitat turning into a red grassland. Would natural selection for pom-pom color occur? Why or why not? 17c. The above scenarios are showing that in order for natural selection to occur must exist within a trait.
Based on (MS-LS4-4) standard(grade8) - Mathematical Representations of Natural Selection: Most scientists think that a small group of finches colonized the Galápagos Islands thousands of years ago. They would have been the only seed-eating birds on the islands. Suppose one island was very dry and another had plentiful rainfall.    Q)How would the finch populations on these islands change over time? Reference to the evidence from data (pictures of Data Set C - Galapagos Islands Finch - 25cm Average Rainfall and Data Set C - Galapagos Islands Finches - Rainfall Effect are attached) and reasoning to support your claim to support your claim. Kindly use also examples outside of the prompt and vocabulary for explanation.
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