試題詳解

17. Pollen from a plant with the S1S2 genotype is recognized and allowed to germinate on the stigma of the same plant with the S1S2 genotype. According to the S-system hypothesis, this indicates that the plant is ______.
(A) self-incompatible and must cross-pollinate
(B) self-incompatible and can self-pollinate
(C) self-compatible and must cross-pollinate
(D) self-compatible and can self-pollinate
(E) self-compatible and can self-pollinate or cross-pollinate