The single-cell organism that does not contain a well-defined nucleus and membrane are called prokaryotes. The genetic information is contained in the nucleoid of the cell.
Nucleoid is a region in the cytoplasm of the prokaryotic cell that is an irregular-shaped structure that consists of the genetic material of the cell.
The process of the replication and transcription of the DNA and RNA of the prokaryotic cell occurs here and is different from the eukaryotic nucleus by lacking a nuclear membrane.
Therefore, prokaryotic genetic material is contained in the option D. nucleoid of the cell.
Learn more about the nucleoid here:
https://brainly.com/question/5083911
