The process indicated by the letter produces a diploid structure. a life cycle of the black bread mold. each letter marks a definite process of this cycle. letter a marks a process of spore germination. letter b marks a process of cytoplasm fusion. letter c marks fusion of nuclei and formation of a round solid structure. letter d marks a process by which the round solid structure produces spores. letter e marks the other cycle, by which mycelium is formed from the spores. the process indicated by the letter produces a diploid structure. a life cycle of the black bread mold. each letter marks a definite process of this cycle. letter a marks a process of spore germination. letter b marks a process of cytoplasm fusion. letter c marks fusion of nuclei and formation of a round solid structure. letter d marks a process by which the round solid structure produces spores. letter e marks the other cycle, by which mycelium is formed from the spores. a b c d e