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Caltech-led Team Shows How Evolution Can Allow for Large Developmental Leaps

July 20, 2009

biology graphic Most evolutionary changes happen in tiny increments. But when it comes to traits, like the number of wings on an insect or limbs on a primate, there is no middle ground. How are these sorts of large evolutionary leaps made? According to a team led by scientists at Caltech, such changes may at least sometimes be the result of random fluctuations, or noise (nongenetic variations), working alongside a phenomenon known as partial penetrance. Full Story

California Institute of Technology

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