A retron is a distinct DNA sequence found in the genome of many bacteria species that codes for reverse transcriptase and a unique single-stranded DNA/RNA hybrid called multicopy single-stranded DNA (msDNA). Retron msr RNA is the non-coding RNA produced by retron elements and is the immediate precursor to the synthesis of msDNA.
In the context of bacterial genetics, a retron is a specific type of genetic element that contains instructions for producing reverse transcriptase and a unique hybrid molecule called multicopy single-stranded DNA (msDNA). The non-coding RNA produced by these elements plays a crucial role in the creation of msDNA.