Current time:0:00Total duration:10:01
0 energy points
Hank explains speciation - the evolutionary process by which new biological species arise - in terms of finches, ligers, mules, and dogs. Created by EcoGeek.
Crash Course Biology
If you're seeing this message, it means we're having trouble loading external resources for Khan Academy.
If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.