Biology: The Unity and Diversity of Life (MindTap Course List)
Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN: 9781305073951
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 44, Problem 10SQ
Summary Introduction

Concept introduction: Population genetics describes the natural selection by defining the species adaptations to their environment. Natural selection is a process in which the organisms adapt to the environment by means of reproduction that selectively have changes in its genotypes. This influences the number of offspring and its life histories.

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Some females seem to prefer the green colouration and some females seem to prefer the blue colouration. What type of selection is this an example of? a. stabilizing  b. balancing  c. directional  d. diversifying
The Grants have studied finches on the Galapagos Islabds for 40+ years. During times of drought there is less green/flowering vegetation available as a good source for the finches. This leaves only the hard seeds. The grants have found that during drought, finches with larger beaks survive at a higher rate because they can access food source. This would be an example of ____ A.Selective pressure  B. good genes hypothesis  C. handicap principle  D. population variation
Birds with average-sized wings survive storms better than those with longer wings or shorter wings. This illustrates _____. a directional selection b disruptive selection c the bottleneck effect d stabilizing selection
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GCSE Biology - Adaptations #79; Author: Cognito;https://www.youtube.com/watch?v=tC-u8xcZYSM;License: Standard Youtube License