Final answer:
In prokaryotic mRNA, the AUG codon, UGA codon, uracil, and cytosine are present, but iC. ntrons are not, as they are only found in eukaryotic mRNA.
Step-by-step explanation:
All of the following are found in prokaryotic mRNA except introns. Prokaryotic mRNA is a mature, single-stranded molecule that carries genetic information for the synthesis of proteins from DNA to the ribosomes, where proteins are synthesized. It contains the following elements:
- The AUG codon, which serves as the initiation signal for protein synthesis.
- The UGA codon, which is one of the three stop codons marking the end of protein synthesis.
- Uracil, which is a nucleotide found in RNA in place of thymine, which is found in DNA.
- Cytosine, also a nucleotide found in both DNA and RNA.
It does not have introns, as these non-coding sequences are only found in eukaryotic mRNA and are removed during post-transcriptional modification to form mature mRNA.
SUM UP the final answer as points:
- Prokaryotic mRNA does contain the AUG codon, UGA codon, uracil, and cytosine.
- Prokaryotic mRNA does not contain introns.