
Concept explainers
To describe: The first existence of species employing biological species concept.
Introduction: Change in the heritable characteristics of the living organisms over time is known as evolution. There are changes in the genome which are transferred over generations. Evolution takes place mainly due to evolutionary forces such as mutation, genetic recombination, and so on. Explanation about the formation of species is given by the biological species concept.
To describe: The first organisms before the concept of species existed.
Introduction: Change in the heritable characteristics of the living organisms over time is known as evolution. There are changes in the genome which are transferred over generations. Evolution takes place mainly due to evolutionary forces such as mutation, genetic recombination, and so on. Explanation about the formation of species is given by the biological species concept.
To describe: The consequences of the emergence of species for the processes of adaptation and diversification.
Introduction: Change in the heritable characteristics of the living organisms over time is known as evolution. There are changes in the genome which are transferred over generations. Evolution takes place mainly due to evolutionary forces such as mutation, genetic recombination, and so on. Evolutionary fitness of organisms is enhanced by evolutionary processes in order to fit them in their environment.

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Chapter 17 Solutions
Evolution, Fourth Edition (looseleaf)
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