Step 1: Understanding prokaryotic cells.
Prokaryotic cells lack a true nucleus and membrane-bound organelles.
Step 2: Location of genetic material.
Their DNA is present in an irregular, non-membrane-bound region called the nucleoid.
Step 3: Eliminating other options.
Nucleosomes are found in eukaryotes.
Nucleus and nucleolus are absent in prokaryotes.
Step 4: Conclusion.
Hence, the genetic material in prokaryotes is present in the nucleoid.