Genetic material of prokaryotic cell

Options

A. Non histonic double stranded DNA
B. Histonic double stranded DNA
C. Histone & DNA both are absent
D. Histone without DNA

Answer

To answer the question regarding the genetic material of prokaryotic cells, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Prokaryotic Cells**: Prokaryotic cells are organisms that lack a defined nucleus and membrane-bound organelles. They include bacteria and archaea.

2. **Nuclear Region**: In prokaryotic cells, the nuclear region (nucleoid) is not well-defined due to the absence of a nuclear membrane. This means that the genetic material is not enclosed within a nucleus.

3. **Genetic Material Characteristics**: The genetic material in prokaryotic cells is typically composed of:
- **Single Circular Chromosome**: Prokaryotes generally have a single, circular chromosome that contains their genetic information.
- **Naked DNA**: This DNA is referred to as "naked" because it is not associated with histone proteins, which are proteins that help package and organize DNA in eukaryotic cells.

4. **Histone Proteins**: Unlike eukaryotic cells, which have DNA wrapped around histone proteins, prokaryotic cells do not have histones associated with their DNA. This is a key distinguishing feature.

5. **Conclusion**: Based on the characteristics of prokaryotic genetic material, we can conclude that the genetic material of prokaryotic cells is:
- **Non-histonic double-stranded DNA**: This refers to the double-stranded circular DNA that is not associated with histone proteins.

### Final Answer:
The genetic material of prokaryotic cells is **option A: non-histonic double-stranded DNA**.

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