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1. lerroa: Biologia molekularrean, '''kodoia''' [[Azido erribonukleiko\|~~ARN~~RNA]] mezularian (~~ARN-m~~mRNA) dauden base nitrogenatuen ([[Adenina\|A]], [[zitosina\|C]], [[Guanina\|G]] eta [[Urazilo\|U]]) hirukotea da, [[aminoazido]] bat kodetzen duena. [[Kode genetiko]]aren funtsa ~~ARN~~mRNA-~~m-an~~n dauden [[base nukleiko\|base nitrogenatu]] eta [[aminoazido]]en arteko harremana izaten da. ~~ARN~~RNA mezularian 64 kodoi daude, 20 aminoazido kodetzen dituztenak. Kodoi gehiago daudenez aminoazidoak baino, kode genetikoa endekatua dago, hots, base nitrogenatuen hirukote batek (kodoi) baino gehiagok aminoazido bera kodetu dezake. Hurrengo taulak ~~ARN~~RNA mezulariaren kodoiak kodetzen dituzten aminoazidoekin lotzen ditu: {\| {{taulapolita}} 20. lerroa: ! U \| UUU (Phe/F) [[Fenilalanina]]<br /> UUC (Phe/F) [[Fenilalanina]]<br /> UUA (Leu/L) [[Leuzina]]<br /> UUG (Leu/L) [[Leuzina]], ''Start''<br /> \| UCU (Ser/S) [[Serina]]<br /> UCC (Ser/S) [[Serina]]<br /> UCA (Ser/S) [[Serina]]<br /> UCG (Ser/S) [[Serina]]<br /> \| UAU (Tyr/Y) [[Tirosina]]<br /> UAC (Tyr/Y) [[Tirosina]]<br /> UAA Ochre (''Stop'')<br /> UAG Amber (''Stop'')<br /> \| UGU (Cys/C) [[Zisteina]]<br /> UGC (Cys/C) [[Zisteina]]<br /> UGA Opal (''Stop'')<br /> UGG (Trp/W) [[Triptofano]]<br /> \|----- ! C \| CUU (Leu/L) [[Leuzina]]<br /> CUC (Leu/L) [[Leuzina]]<br /> CUA (Leu/L) [[Leuzina]]<br /> CUG (Leu/L) [[Leuzina]], ''Start''<br /> \| CCU (Pro/P) [[Prolina]]<br /> CCC (Pro/P) [[Prolina]]<br /> CCA (Pro/P) [[Prolina]]<br /> CCG (Pro/P) [[Prolina]]<br /> \| CAU (His/H) [[Histidina]]<br /> CAC (His/H) [[Histidina]]<br /> CAA (Gln/Q) [[Glutamina]]<br /> CAG (Gln/Q) [[Glutamina]]<br /> \| CGU (Arg/R) [[Arginina]]<br /> CGC (Arg/R) [[Arginina]]<br /> CGA (Arg/R) [[Arginina]]<br /> CGG (Arg/R) [[Arginina]]<br /> \|----- ! A \| AUU (Ile/I) [[Isoleuzina]], ''Start''<sup>2</sup><br /> AUC (Ile/I) [[Isoleuzina]]<br /> AUA (Ile/I) [[Isoleuzina]]<br /> AUG (Met/M) [[Metionina]], ''Start''<sup>1</sup><br /> \| ACU (Thr/T) [[Treonina]]<br /> ACC (Thr/T) [[Treonina]]<br /> ACA (Thr/T) [[Treonina]]<br /> ACG (Thr/T) [[Treonina]]<br /> \| AAU (Asn/N) [[Asparagina]]<br /> AAC (Asn/N) [[Asparagina]]<br /> AAA (Lys/K) [[Lisina]]<br /> AAG (Lys/K) [[Lisina]]<br /> \| AGU (Ser/S) [[Serina]]<br /> AGC (Ser/S) [[Serina]]<br /> AGA (Arg/R) [[Arginina]]<br /> AGG (Arg/R) [[Arginina]]<br /> \|----- ! G \| GUU (Val/V) [[Balina]]<br /> GUC (Val/V) [[Balina]]<br /> GUA (Val/V) [[Balina]]<br /> GUG (Val/V) [[Balina]], ''Start''<sup>2</sup><br /> \| GCU (Ala/A) [[Alanina]]<br /> GCC (Ala/A) [[Alanina]]<br /> GCA (Ala/A) [[Alanina]]<br /> GCG (Ala/A) [[Alanina]]<br /> \| GAU (Asp/D) [[Azido aspartiko]]<br /> GAC (Asp/D) [[Azido aspartiko]]<br /> GAA (Glu/E) [[Azido glutamiko]]<br /> GAG (Glu/E) [[Azido glutamiko]]<br /> \| GGU (Gly/G) [[Glizina]]<br /> GGC (Gly/G) [[Glizina]]<br /> GGA (Gly/G) [[Glizina]]<br /> GGG (Gly/G) [[Glizina]]<br /> \|}

Kodoi: berrikuspenen arteko aldeak