試題詳解

30. The heterokaryotic phase of a fungal life cycle is ______.
(A) a stage in which the hyphae contain only one type of haploid nucleus
(B) a stage in which hyphae contain two, genetically different, haploid nuclei
(C) a stage in which hyphae contain two, genetically different, diploid nuclei
(D) a stage that is diploid but functions as a gametophyte (like the body of an animal)
(E) a triploid stage formed by the fusion of a diploid nucleus with the haploid nucleus of a compatible hypha