Normally, both male and female African elephants have tusks, which are really a pair of massive teeth. But a few are born without them. Under heavy poaching, those few elephants without ivory are more likely to pass on their genes. The pattern of tusklessness in families confirms the scientists’ hunch: It seems to be a dominant trait, carried by females, that is lethal to males. That means a female with one copy of the tuskless mutation has no tusks. Half of her daughters will have tusks, and half will be tuskless. Are we likely to have generations of Tuskless Elephant?

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