1. Heterogeneity in Genome Size 2. Chromosomal Rearrangements within Species 3. Euploid and Aneuploid Diversification within Genera 4. Chromosomal Barriers to Interspecific Gene Exchange 5. Permanent Translocation Heterozygosity 6. Polyploidy: Incidence, Types, and Modes of Establishment 7. Phenotypic Consequences of Chromosome Doubling 8. Chromosomal and Genetic Consequences of Chromosome Doubling 9. The Evolution of Polyploid Lineages Bibliography Index