pls answer this question
Answers
Answer:
Let's take an example from Division Ascomycota. We will examine sexual reproduction in simple steps.
These fungi are found as long strands of individual cells. These strands are called hyphae and are located in dirt or on their food source. Each cell has one haploid nucleus.
The hyphae encounter the opposite mating type. So the hyphae come in + and — types.
Cells of the opposite type fuse together. So, one + cell fuses with one -- cell. This yields a cell with TWO nuclei. The nuclei are different. So this fused cell, and the fungal parts derived from it by mitosis, are “dikaryotic”. Di means two, of course, so dikaryotic means two nuclei.
The dikaryotic cell grows and divides to make new dikaryotic hyphae. The hyphae grow together to make a cup-like structure that is visible on trees, dead logs, etc.
In a few of the eukaryotic cells of the cup, the two haploid nuclei fuse. This yields a diploid cell.
The diploid cell will undergo meiosis to generate haploid spores that will be dispersed in the environment. The spore cells grow into new haploid hyphae.
This was simplified, but I think it answers your question. The dikaryon stage is when the cells are dikaryotic.