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Did the Civil War Cause Elephants to Lose Their Tusks?
The change coincides with the mosambecan civil war, which lasted from 19 77 to 19 92. The key mutation is carried on the x chromosome. If you have two xs, your female, an x and a y, your male. And an interesting quirk is the mutation that causes tusklessness comes as like a package d. All f the males in gorengosa still have their tusks but only about half the females do.
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