The mRNa of prokaryotes is

Options

A. Polycistronic
B. Monocistronic
C. Formed by splicing of hnRNA
D. Carries genetic message to DNA.

Answer

### Step-by-Step Solution

1. **Understanding mRNA**: mRNA, or messenger RNA, is a type of RNA that carries genetic information from DNA to the ribosome, where proteins are synthesized.

2. **Prokaryotic vs. Eukaryotic mRNA**: It is essential to differentiate between prokaryotic and eukaryotic mRNA. Prokaryotes (like bacteria) and eukaryotes (like animals and plants) have different structures and functions for their mRNA.

3. **Monocistronic vs. Polycistronic**:
- **Monocistronic mRNA**: This type of mRNA is found in eukaryotes and contains information for only one polypeptide chain. It has a single initiation codon and a single termination codon.
- **Polycistronic mRNA**: This type of mRNA is characteristic of prokaryotes. It can encode multiple polypeptide chains within a single mRNA molecule. This means it has more than one initiation and termination codon.

4. **Function of Polycistronic mRNA**: In prokaryotes, polycistronic mRNA allows for the coordinated expression of genes that are involved in the same metabolic pathway, facilitating efficient protein synthesis.

5. **Conclusion**: The mRNA of prokaryotes is polycistronic, meaning it can produce multiple proteins from a single mRNA transcript.

### Final Answer
The mRNA of prokaryotes is polycistronic.

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