CK-12 Foundation
Ck 12: Episd: Origin of Species
[Free Registration/Login may be required to access all resource tools.] Study the process of speciation and two types: allopatric and sympatric presented in this module.
Khan Academy
Khan Academy: Species & Speciation
Find out what defines a species, and learn how new species can arise from existing species.
CK-12 Foundation
Ck 12: Life Science: Origin of Species
[Free Registration/Login may be required to access all resource tools.] The creation of a new species is called speciation. Most new species develop naturally. But humans have also artificially created new breeds and species for...
BiologyWise
Biology Wise: 4 Basic Modes of Speciation Show How Species Evolve
Explains what the four main modes of species formation are - allopatric, parapatric, peripatric, and sympatric speciation - and provides examples. A fifth possible mode, stasipatric speciation, is also discussed.
CK-12 Foundation
Ck 12: Life Science: 4.9 Origin of Species
Understand how species develop and change over time.