Where karyogamy and meiosis take place in basidiomycetes ?

Explanation

**Step-by-Step Solution:**

1. **Understanding Basidiomycetes**: Basidiomycetes are a group of fungi that include mushrooms and bracket fungi. They are known for their fruiting bodies, which are structures that produce spores.

2. **Sexual Cycle of Basidiomycetes**: The sexual reproduction in basidiomycetes involves three main stages:
- **Plasmogamy**: This is the first stage where the protoplasts (cell contents) of two compatible mating types fuse together.
- **Karyogamy**: This is the second stage, where the nuclei from the fused protoplasts combine to form a diploid nucleus.
- **Meiosis**: This is the final stage where the diploid nucleus undergoes meiosis to produce haploid spores.
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