High school biology worksheet

Biology 200-29 Data Sheet

Messenger RNA Codons and Their Corresponding Amino Acids

First Base

Second Base Third Base U C A G

U

UUU phenylalanine UUC phenylalanine UUA leucine UUG leucine

UCU serine UCC serine UCA serine UCG serine

UAU tyrosine UAC tyrosine UAA stop** UAG stop**

UGU cysteine UGC cysteine UGA stop** UGG tryptophan

U C A G

C

CUU leucine CUC leucine CUA leucine CUG leucine

CCU proline CCC proline CCA proline CCG proline

CAU histidine CAC histidine CAA glutamine CAG glutamine

CGU arginine CGC arginine CGA arginine CGG arginine

U C A G

A

AUU isoleucine AUC isoleucine AUA isoleucine AUG methionine*

ACU threonine ACC threonine ACA threonine ACG threonine

AAU asparagine AAC asparagine AAA lysine AAG lysine

AGU serine AGC serine AGA arginine AGG arginine

U C A G

G

GUU valine GUC valine GUA valine GUG valine

GCU alanine GCC alanine GCA alanine GCG alanine

GAU aspartate GAC aspartate GAA glutamate GAG glutamate

GGU glycine GGC glycine GGA glycine GGG glycine

U C A G

* Note: AUG is an initiator codon and also codes for the amino acid methionine. ** Note: UAA, UAG, and UGA are terminator codons.

Information About Nitrogen Bases

Nitrogen Base Classification Abbreviation Adenine Purine A Guanine Purine G Cytosine Pyrimidine C Thymine Pyrimidine T Uracil Pyrimidine U