Reading frame
In genetics, a reading frame is a contiguous, non-overlapping sequence of base triplets on the DNA or mRNA , with three possible reading frames for a single-stranded mRNA and six for a double-stranded DNA - since transcription is basically possible here from both strands possible reading frames.
Example: The sequence "AGTGCTGAC" can be read in three different ways:
- AGT GCT GAC
- AG TGC TGA C
- A GTG CTG AC
A reading grid must not be confused with a reading frame . The latter is a DNA segment between a start codon and a stop codon in the same reading frame, which contains a variable number (usually> 100) of meaningful codons.