Written by the Fiveable Content Team โข Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 examโขWritten by the Fiveable Content Team โข Last updated September 2025
Definition
Directionality refers to the specific sequence or order in which monomers are arranged within a biological molecule. The sequence determines the molecule's structure and function.
DNA has directionality due to its two strands running in opposite directions. The sequence of nucleotides along each strand determines genetic information.
RNA Transcription: During transcription, RNA is synthesized from DNA based on its template strand's directionality.