Summary

CONCEPT
17.1
Species Are Reproductively Isolated Lineages on the Tree of Life

CONCEPT
17.2
Speciation Is a Natural Consequence of Population Subdivision

CONCEPT
17.3
Speciation May Occur through Geographic Isolation or in Sympatry

CONCEPT
17.4
Reproductive Isolation Is Reinforced When Diverging Species Come into Contact

See ACTIVITY 17.1 for a concept review of this chapter.