In some large groups of plants, including dandelions, oaks, and willows, the biological species concept is complicated because the process of _____ allows gene flow to occur between good _____ that can be easily distinguished based on appearance

A. hybridization; morphospecies
B. hybridization; ecological species
C. allopatric speciation; ring species
D. polyploidy; evolutionary species
E. polyploidy; ring species


A

Biology & Microbiology

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Biology & Microbiology