The most common mechanism for sympatric speciation in plants is

A. geographic isolation.
B. punctuated equilibrium.
C. disruptive selection.
D. polyploidy.
E. spontaneous mutation.


Answer: D

Biology & Microbiology

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Which of the following bases is contained by DNA but not RNA?

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When gametes fuse during fertilization, a(n) ________ is produced

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Biology & Microbiology