Codon table worksheet
Use the codon table given to answer the following questions.
1. What are the codons that code for the amino acid “Phe”. List all of them.
2. What codons code for amino acid “Pro”
3. Which codons act as stop codons?
4. Which codon is start codon for all proteins?
5. How many codons are there in the codon table?
6. How many amino acids are coded by the codons?
7. Most of the amino acids are coded by more than one codon. What are the two amino acids that
are coded by only one codon?
Fill in the missing information using the codon table and your knowledge of DNA structure.
DNA Triplet
TAC
mRNA
AUG
tRNA
UAC
CAG
CUC
CCC
GTG
AAA
GAA
GTG
CCC
Write the codons for the following amino acids.
1. Phe
2. Val
3. Leu
4. Pro
5. Arg
Write the amino acids coded by the following codons
1. UUU
2. AUU
3. CCC
4. GAA
5. GCC
Amino acid
Met
Use your codon table to determine the amino acid sequence. Remember to read through the strand
and ONLY start on AUG and STOP when it tells you to stop. Follow example below:
DNA
mRNA
a.a
TTT
AGC TAC GAC CGA TAA TCT ATT CAT GGT ACC ACT TTT
AUG CUG GCU AUU AGA AUU GUA CCA UGG UGA
Met Leu Ala Ile
Arg Ile
Val
Pro Trp Stop
ACC
Try the following:
DNA
mRNA
a.a
TAC AAA AGG CCA
TTT
ATG
GTA
GGC
CCG
TTA
DNA
mRNA
a.a
CCG ATA
CTT
GGG GGC
ATA
TAC
TTT
AAA TCC
DNA
mRNA
a.a
AGG CGG GCC
TAC
CCC
TCC
AGG
GGA CCA
TTC
CCT
ATT
ACC
GCA
CCC ATT
ACT
CCC GAG
ATC
CCG AGG