Biology / Unit 6 Bio 1255 short lesson, about 20 seconds
The Reading Frame
Captions available
The idea
The reading frame is the specific grouping of an mRNA sequence into consecutive, non-overlapping codons, fixed by where translation begins.
In practice
The sequence AUGGGCUAA reads as AUG-GGC-UAA in its correct frame, but as a different, meaningless set of codons if shifted by one base.
Where people slip
An mRNA has three possible reading frames, but the start codon fixes which one is actually translated.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Something wrong in this lesson? Flag it · Sources for Biology