The biological species concept defines a species
a. as a population or group of populations whose members have the potential to interbreed in nature and produce fertile offspring
b. as a population that is classified based on observable phenotypic traits
c. by its ecological role or niche
d. as a set of organisms representing a specific evolutionary lineage
e. none of the above
Ans: a. as a population or group of populations whose members have the potential to interbreed in nature and produce fertile offspring
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