試題詳解

32. A plant will recognize a pathogenic invader
(A) if it has many specific plant disease resistance (R) genes.
(B) when the pathogen has an R gene complementary to the plant's antivirulence (Avr) gene.
(C) when the pathogen secretes Avr protein.
(D) if it has the specific R gene that corresponds to the pathogen molecule encoded by an Avr gene.