Assertion: butterfly's wing | /r/AtLocation | butterfly
Facets:
Source sentences:
text: In butterflies, asymmetrical wings are observed in three different ways: fluctuating (small, random variations from the standard bilateral symmetry), directional (variations that are biased towards a particular side so one wing is larger than the other), and antisymmetry (similar to directional but half of the individuals of the species find that a particular wing, such as their left, is larger, and the other half of the individuals find that their right is larger.