Khan Academy
Khan Academy: Genetic Variation, Gene Flow, and New Species
Learn how genetic variation is the raw material of evolution, and learn how restricted gene flow can lead to the formation of new species. [11:52]
Khan Academy
Khan Academy: Evolution: Species
What a species is and isn't. Ligers, tiglons, mule, hinnies, and dogs. [8:48]
Khan Academy
Khan Academy: Evolution: Variation in a Species
How variation can be introduced into a species. [19:51]
Sophia Learning
Sophia: Speciation and Natural Selection: Lesson 2
This lesson discusses how and why plants and animals adapt to their surroundings over time. It is 2 of 4 in the series titled "Speciation and Natural Selection."
Bozeman Science
Bozeman Science: Speciation
Paul Andersen explains how reproductive isolation can eventually lead to speciation. Three main barriers to gene flow are included: geographic, pre-zygotic and post-zygotic. Both allopatric and sympatric speciation are discussed. A brief...
Bozeman Science
Bozeman Science: Ap Speciation Review
Paul Andersen reviews the major concepts within the second unit of the new AP Biology framework. He starts by describing how life is organized into three domains. He explains how the history of life on the planet is characterized by mass...
Bozeman Science
Bozeman Science: Speciation and Extinction
Paul Andersen details the evolutionary processes of speciation and extinction. Stickleback evolution in Lake Loberg is used as example of rapid speciation. Adaptive radiation is illustrated using the Hawaiian honeycreeper. A brief...