This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: Excluded organism-clonal, parthenogenetic, highly self-fertile species-syngameans cluster of species hybridization Cladogenesis-occurs when you have divergence of two genetic lineages froma common ancestor-complete when the evolutionary lineage becomes two species Geographic-allopatric- species form from geographically isolated populations-birds on island separate from each other-parapatric- species form from adjacent populations due to species gradient-sympatric- species form from geographically overlapping populations Allopatric model-Genetic modes of speciation-chromosomal rearrangements arise that lead to reproductive isolation through hybrid sterility-structural rearrangements-polyploidy instantaneous and sympatric mode of speciation-increase in single haploid set-can’t find a plant without polyploidy Autopolyploid-occurs within single evolutionary Allopolyploidy-different lineages that form-an increase in progenes through evolution...
View Full Document
This note was uploaded on 05/04/2009 for the course GENE GENE3000 taught by Professor Anderson during the Spring '09 term at University of Georgia Athens.
- Spring '09