How Do New Organs Evolve? A Beetle Gland Shows the Way.
The tiny rove beetle, no bigger than a grain of rice, looked dangerously exposed on the bottom of the glass dish in Joe Parker’s laboratory — and that was even before its fellow prisoner, an ant three times as big, advanced on it. The ant’s mandibles gaped open and prepared to seize the beetle. Suddenly, the beetle’s abdomen curved up and something happened, something that sent the ant reeling…
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