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 I Weave Together Information

 The Genetic Code
 

Second Base in Codon




F
i
r
s
t

B
a
s
e

i
n

C
o
d
o

  A G U C  




T
h
i
r
d

B
a
s
e

i
n

C
o
d
o
n

 

 

 

 

A

Lysine

Arginine

Isoleucine

Threonine

A

Lysine

Arginine

Methionine

Threonine

G

Asparagine

Serine

Isoleucine

Threonine

U

Asparagine

Serine

Isoleucine

Threonine

C

G

Glutamic Acid

Glycine

Valine

Alanine

A

Glutamic Acid

Glycine

Valine

Alanine

G

Aspartic Acid

Glycine

Valine

Alanine

U

Aspartic Acid

Glycine

Valine

Alanine

C

U

"Stop" Codon

"Stop" Codon

Leucine

Serine

A

"Stop" Codon

Tryptophan

Leucine

Serine

G

Tyrosine

Cysteine

Phenylalanine

Serine

U

Tyrosine

Cysteine

Phenylalanine

Serine

C

C

Glutamine

Arginine

Leucine

Proline

A

Glutamine

Arginine

Leucine

Proline

G

Histidine

Arginine

Leucine

Proline

U

Histidine

Arginine

Leucine

Proline

C

A codon is a series of three messenger RNA nucleotides which, in the genetic code specifies a particular amino acid.

To determine the amino acid coded for by a triplet codon, first find the row in the left column (yellow background) corresponding to the first letter of the codon. Move to the left across that row to the column headed by the second letter in the codon.  Finally, from the four possible choices specified by the first two letters, select the one in the row corresponding to the third letter of the codon in the column on the right (dark red background.) For example, the codon UUC codes for the amino acid phenylalanine.

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Contexo Home Page ] Introduction ] Basic Chemistry ] Cell Chemistry ] Cell Structure ] Mitochondria ] Cell Nucleus ] Chromosomes ] Mitosis ] Meiosis ] Proteins ] DNA ] DNA Replication ] Gene Expression ] Mutation ] Molecular Genealogy ] Collecting Your Own DNA ] Polymerase Chain Reation ] Primers ] DNA Sequencing ] How Microsatellite Repeats Are Counted ] YSTR Database Allele Frequency Charts ] Dorsey DNA Surname Project Home Page ] Links ]

This web is lovingly dedicated to the memory of
Mr. James Dorsey
who so graciously and enthusiastically
donated his DNA to solve our family mystery. 


Jim Dorsey
2/12/1930 — 4-30-2002

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