A) quantum evolution
B) phyletic evolution
C) both [a] and [b]
D) none of these
Correct Answer: B
Solution :
Phyletic speciation is one in which one species is transformed into species B over a long period of time by slow and steady change. This occur due to : [a] Adaptation to a shifting environment, [b] Increasing specialization for a particular environment, [c] Improved adaptation in a constant environment.
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