Which statement about the dikaryotic condition is false?
A) The cytoplasm of two cells fuses before their nuclei fuse.
B) The two haploid nuclei are genetically different.
C) The two nuclei are of the same mating type.
D) The dikaryon stage ends when the two nuclei fuse.
E) Not all fungi have a dikaryon stage.

Question

Quizplus · Accepted Answer

The dikaryotic condition is characterized by the presence of two haploid nuclei within a single cell, each derived from a different parent. These nuclei are genetically different and are of different mating types. The cytoplasm of the two cells fuses, but the nuclei remain separate and do not fuse until later in the life cycle. Therefore, statement C that the two nuclei are of the same mating type is false. The dikaryon stage ends when the two nuclei fuse to form a diploid nucleus, which then undergoes meiosis to produce haploid spores. It should be noted that not all fungi have a dikaryon stage, but it is a common feature in many fungal life cycles.

Which Statement About the Dikaryotic Condition Is False