How Do Darwin's Finches Respond So Quickly To Environmental Changes?

Epigenetics may be how Darwin’s finches rapidly change their beak size and shape in response to sudden environmental changes, such as drought or human disturbance, in the absence of gene mutations

from Forbes Real Time //www.forbes.com/sites/grrlscientist/2017/09/06/how-do-darwins-finches-respond-so-quickly-to-environmental-changes/
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