Biologist Offers a Solution to the ‘Freeloaders Paradox’

Freeloaders ?? individuals eager to join social groups, but who once in, tend to avoid pulling their fair share of the chores ?? have long posed something of a problem for evolutionary biologists. In theory, because freeloaders don?t expend the efforts and energy of their more civic-minded neighbors, they should be able to translate that energy into more offspring, spreading their “slacker genes” and overrunning the world with offspring of similar ilk. But that doesn’t happen, and an Arizona researcher thinks she knows why.

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