Red Queen

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Red Queen

shaken by Alice, she turns into a kitten. [Br. Lit.: Lewis Carroll Through the Looking-Glass]
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if any one species does not become modified and improved in a corresponding degree with its competitors, it will be exterminated." Van Valen (1973), in examining rates of extinctions, mathematically explained the coevolution of two species as a "zero sum game," dubbing it the Red Queen's Hypothesis. Later Dawkins (1996) described coevolution using the analogy of an "arms race," in which two superpowers keep improving their weaponry only to find that neither has gained an increased advantage relative to the other.
They should see a somewhat parallel increase in speed for both populations, which is what the Red Queen's Hypothesis (Van Valen, 1973) would predict for real interacting populations.