alleryErnst Mayr pioneered the currently accepted definition of a biological:
ASpecimen
BSpectrum
CSequence
DSpecies
Answer & Solution
Correct answer: D. Species
1. His work made species diversity central to evolutionary biology.
2. The definition he shaped concerns the basic unit itself.
3. He also pioneered the currently accepted definition of a biological species.
4. So the answer is species.
_Source: syllabus Biology, Ch 1 'The Living World'_
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