Encyclopedia > 22nd century BC

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22nd century BC

(23rd century BC - 22nd century BC - 21st century BC - other centuries)

(4th millennium BC - 3rd millennium BC - 2nd millennium BC)


Events:

Significant persons:

Inventions, Discoveries, Introductions:



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Biological life

... sufficient to allow evolution, assuming the variations in the offspring allow for differential survivability. The study of this form of heritability is called genetics, and ...