BI111 Chapter Notes - Chapter 19: Sympatric Speciation, Allopatric Speciation, Parapatric Speciation
Document Summary
Communication can affect both interspecific and intraspecific behaviours. Biologists use scientific names, latinized descriptions of the organism bearing the name, each described species has a scientific name. Species are the fundamental taxonomic units of biological classification. The biological species concept defines a species as a group of organisms that can successfully interbreed and produce fertile offspring. The phylogenetic species concept defines a species as a group of organisms bound by a unique ancestry. The ecological species concept defines a species as a group of organisms bound by a unique that share a distinct ecological niche. These definitions do not work well with species that reproduce asexually. Androdioecy and gynogenetic species are variations in patterns in reproduction. Androdioecious organisms exist as natural populations of functional males and hermaphrodites but include no ture females. Within these females, the eggs require mechanical stimulation by sperm to initiate development. Hybridization is when two species interbreed and produce fertile offspring.
