allerySymmetry in biology, unlike in mathematics, is always what?
AApproximate
BPerfectly exact
CMirror-based only
DHidden inside
Answer & Solution
Correct answer: A. Approximate
1. In mathematics a symmetry is exact.
2. Living things rarely match perfectly; leaves, for example, rarely line up exactly when folded in half.
3. So biological symmetry is always approximate.
_Source: Wikipedia, Symmetry in biology, lead section_
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