11. African cichlids also offer some evidence for sympatric speciation . 12. Speciation can occur sympatric speciation or allopatric speciation ( and a few other ways ). 13. Ecological character displacement is another means for sympatric speciation . 14. This helps maintain sympatric speciation within the lakes. 15. This is an example of sequential sympatric speciation . 16. It is unlikely that sympatric speciation has played any role in the generation of bird diversity, 17. One type of sympatric speciation involves crossbreeding of two related species to produce a new hybrid species. 18. Disruptive selection is inferred to oftentimes lead to sympatric speciation through a phyletic gradualism mode of evolution. 19. The frequency of other types of speciation, such as sympatric speciation , parapatric speciation, and heteropatric speciation, is debated. 20. Yet, recent research has begun to indicate that sympatric speciation is not as uncommon as was once assumed.
