Learn how chance events can alter allele frequencies in populations, particularly when …
Learn how chance events can alter allele frequencies in populations, particularly when the populations are small, via genetic drift, the bottleneck effect, and the founder effect. Created by Sal Khan.
An overview of how the Mongol Empire, founded by Genghis Khan in …
An overview of how the Mongol Empire, founded by Genghis Khan in 1206, eventually becomes the largest contiguous empire in world history before splitting formally into the Yuan Dynasty, Golden Horde, Chagatai Khanate and Ilkhanate.
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