This video (10:25) is fifteenth in the Crash Course Biology series. 

References for this episode can be found in the Google document here: http://dft.ba/-2DnD

Table of Contents
1) Species 0:30
2) Hybrids 1:52
3) Reproductive Isolation 2:48
a) Post-Zygotic 3:31
b) Pre-Zygotic 3:51
4) Allopatric Speciation 4:23
5) Sympatric Speciation 6:03
6) Biolography 6:32
7) Dogs 8:37

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