Fig. 23-1 Copyright © 2008 Pearson Education Inc., publishing as Pearson Benjamin Cummings Concept 23.1: Mutation and sexual reproduction produce the genetic variation that…

Chapter 23: The Evolution of Populations Chapter 23: The Evolution of Populations S Chapter 23 Assignment Define the terms population, species, gene pool, relative fitness,…

Fig. 23-2 (a) (b) Copyright © 2008 Pearson Education Inc., publishing as Pearson Benjamin Cummings Variation Between Populations Most species exhibit geographic variation,…

Genetic Variation (a) (b) Copyright © 2008 Pearson Education Inc., publishing as Pearson Benjamin Cummings Population geneticists measure polymorphisms in a population…

The Evolution of Populations The Smallest Unit of Evolution Microevolution â the smallest unit of evolutionary change in populations. The changes in allele frequencies in…

Fig. 23-2 Nonheritable Variation (a) (b) Caterpillars raised on a diet of oak flowers resembled the flowers Siblings raised on oak leaves resembled oak twigs Copyright ©…