
Concept explainers
To explain: Whether the pattern of rate of evolutionary changes over time intervals holds true for most characters.
Introduction: The degree and rate of evolutionary changes vary in all organisms. For example: the rates of evolutionary change measured over short time intervals are often very high. However, rate of evolutionary changes that is measured over long time intervals are generally much lower.
To explain: Whether this pattern of rate of evolutionary changes over time intervals implies that the evolution of major new characters, such as the wings of bats, should occur very rapidly.
Introduction: The degree and rate of evolutionary changes vary in all organisms. For example: the rates of evolutionary change measured over short time intervals are often very high. However, rate of evolutionary changes that is measured over long time intervals are generally much lower.

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Chapter 20 Solutions
Evolution, Fourth Edition (looseleaf)
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