Natural Hybridization and EvolutionThis study draws on data from numerous sources that support the paradigm of natural hybridization as an important evolutionary process. The review of these data results in a challenge to the framework used by many evolutionary biologists, which sees the process of natural hybridization as maladaptive because it represents a violation of divergent evolution. In contrast, this book presents evidence of a significant role for natural hybridization in furthering adaptive evolution and evolutionary diversification in both plants and animals. |
Contents
Definitions and History | 3 |
2 Natural Hybridization and Species Concepts | 11 |
Frequency | 23 |
4 Reproductive Parameters and Natural Hybridization | 64 |
Concepts and Theory | 113 |
Outcomes | 155 |
Emerging Patterns | 182 |
| 187 | |
| 213 | |
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Common terms and phrases
alleles allopolyploid allozyme analyses anomalus barriers Barton and Hewitt Bombina brevicaulis Caledia Chorthippus chromosome clade clines conspecific cpDNA crosses Cruzan and Arnold debilis demonstrate distribution divergent Drosophila environment-dependent evolution example exogenous selection F₁ hybrid fertilization fitness of hybrid forms frequency of hybrid Furthermore gametes gametophytic gene flow genetic genomes genus Gly Thr Gly Grant and Grant gray wolf habitats haplotypes Helianthus heterospecific pollen hexagona hybrid classes hybrid genotypes hybrid individuals hybrid populations hybrid progeny hybrid speciation hybrid species hybrid zone hybridization events hypothesis indicate introgression introgressive hybridization inviability involved Iris fulva male markers mating Mayr Moreton mtDNA Nasrallah natural hybridization nuclear parental genotypes pattern petiolaris phylogenetic phylogeny plants and animals pollen tube pollen tube growth polyploid rDNA recombinant relative Rieseberg Shaw simulans speciation Species Concept sperm sporophytic Stebbins studies subspecies taxa taxon taxonomic Tension Zone model Thr Gly Thr tion Torresian variation