A part of an mRNA has the sequence AGA. Use the table below to figure out
which amino acid is coded for by AGA, then use the table to figure out which
change to this sequence would indicate a silent mutation.
Messenger
RNA Codons
First base in codon
A
G
U
UUU
UUC
UUA
UUG
CUU
CUC
CUA
CUG
AUU
AUC
AUA
GUU
GUC
GUA
GUG
O A. AGG
OB. AUA
OC. GAG
OD. GGA
Second base in codon
A
Phe
Leu
Leu
UCU
UCC
UCA
UCG
ACA
AUGStartMe ACG
Val
CCU
CCC
CCA
CCG
ACU
lle ACC
GCU
GCC
GCA
GCG
Ser
Pro
Thr
Ala
UAU
UGU
UAC Tyr UGC Cys
UAA Stop UGA Stop A
UAG Stop UGG Trp
His
CAU
CAC
CAA
CAG
AAA 1
AAG
GAU
GAC
Gin
AAU
AGU
Asn
AAC/ AGC
GAA
GAG
GCAL
Lys
Asp
CGU
CGC
Glu
CGA
CGG/
AGA1
AGG
GGU
GGC
GGA
GGG
Arg
Ser
Arg
>UUU Gly
Third base in codon