rules by which information encoded within genetic material is translated into proteins
Genome.gov
genome.gov › genetics-glossary › Codon
Codon
Codon. When people talk about the genetic code, they are referring to the phenomenon of DNA containing an informational code to create the proteins that an organism needs to function.
Nature
nature.com › scitable › definition › codon-155
codon | Learn Science at Scitable
A triplet sequence of DNA or RNA nucleotides corresponding to a specific amino acid or a start/stop signal in translation.
Videos
08:14
What is Codon and Anti-Codon ? Difference and Working Explained ...
How to Read a Codon Chart - YouTube
04:28
Codon | Definition, Diagram & Examples - Video | Study.com
What is a codon? (And Translation) - YouTube
05:51
Codons and Anticodons Explained - YouTube
12:37
Tricky Topics: Reading the Codon Chart - YouTube
Codon Learning
codonlearning.com
Codon Learning
Codon Learning is a science courseware developer that supports the practice of evidence-based teaching. Our student-centered approach applies active engagement, assessment, inclusivity, and analytics to improve learning outcomes.
Wikipedia
en.wikipedia.org › wiki › Genetic_code
Genetic code - Wikipedia
March 31, 2026 - The codons specify which amino acid will be added next during protein biosynthesis. With some exceptions, a three-nucleotide codon in a nucleic acid sequence specifies a single amino acid. The vast majority of genes are encoded with a single scheme (see the RNA codon table).
Merriam-Webster
merriam-webster.com › dictionary › codon
CODON Definition & Meaning - Merriam-Webster
The meaning of CODON is a specific sequence of three consecutive nucleotides that is part of the genetic code and that specifies a particular amino acid in a protein or starts or stops protein synthesis —called also triplet.
NCI
cancer.gov › publications › dictionaries › genetics-dictionary › def › codon
Definition of codon - NCI Dictionary of Genetics Terms
A dictionary of more than 150 genetics-related terms written for healthcare professionals. This resource was developed to support the comprehensive, evidence-based, peer-reviewed PDQ cancer genetics information summaries.
Dictionary.com
dictionary.com › browse › codon
CODON Definition & Meaning | Dictionary.com
A sequence of three adjacent nucleotides on a strand of a nucleic acid (such as DNA) that constitutes the genetic code for a specific amino acid that is to be added to a polypeptide chain during protein synthesis. Some amino acids are coded for by more than one codon, and some codons do not ...
Biology Online
biologyonline.com › home › codon
Codon - Definition and Examples - Biology Online Dictionary
July 24, 2022 - Biology definition: A codon is the amino acid coding unit in DNA or messenger RNA (mRNA). The string of codons in the mRNA specifies the order of amino acids in the encoded protein.
Collins Dictionary
collinsdictionary.com › us › dictionary › english › codon
CODON definition in American English | Collins English Dictionary
a small group of chemical units, consisting of a sequence of three nucleotides, that codes the incorporation of a specific small group of amino acids into a protein molecule during the synthesis of the protein; codons are present in DNA and RNA
Cambridge Dictionary
dictionary.cambridge.org › us › dictionary › english › codon
CODON | definition in the Cambridge English Dictionary
May 20, 2026 - CODON meaning: 1. a set of three nucleotides that together form a unit of genetic code in a DNA or RNA molecule 2…. Learn more.
Lumen Learning
courses.lumenlearning.com › wm-biology1 › chapter › reading-codons
Codons | Biology for Majors I
When one or two nucleotides were inserted, protein synthesis was completely abolished. When three nucleotides were inserted, the protein was synthesized and functional. This demonstrated that three nucleotides specify each amino acid. These nucleotide triplets are called codons.
Kazusa DNA Research Institute
kazusa.or.jp › codon
Codon Usage Database
Additional Service Countcodon program: compilation a sequence into a codon usage table
ScienceDirect
sciencedirect.com › topics › biochemistry-genetics-and-molecular-biology › codon
Codon - an overview | ScienceDirect Topics
The composition of codons in the coding region can be affected by mutations, selection [1], and genetic drift [2–4]. Specifically, the selection can be related to frameshifting and various central intracellular phenomena such as transcription, translation, mRNA stability, RNA and DNA methylation, ...
Human Genome Variation Society
hgvs.org › mutnomen › codon.html
Nomenclature for the description of sequence variants: codons and amino acids
NOTE - starting VarNomen version 3 the '*' is used to indicate a translation stop codon, replacing the 'X' used previously (see Background).
Patsnap Synapse
synapse.patsnap.com › article › what-is-a-codon-how-dna-codes-for-amino-acids
What Is a Codon? How DNA Codes for Amino Acids
Codons are the essential units of the genetic code, and there are 64 possible codons in total, determined by the permutation of the four bases (A, U, C, and G). Each codon corresponds to a specific amino acid or a stop signal during protein ...
GenScript
genscript.com › resources › bioinformatics tools
GenScript Codon Table Tool
GenSmart™ Codon Optimization Tools Hot!
AAT Bioquest
aatbio.com › resources › faq-frequently-asked-questions › What-is-a-codon
What is a codon? | AAT Bioquest
June 22, 2020 - A codon is a trinucleotide sequence of DNA or RNA that corresponds to a specific amino acid or stop signal during protein synthesis. Codons allow genes, who are made up with four nucleotides, to be translated into proteins that are built with amino acids.