Table 3. Major codons identified on the third chromosome of D. pseudoobscura.

Amino Acid	Codon	%	Ga	Amino Acid	Codon	(%)	Ga
Ala	GCT	16.48		Leu	TTA	2.96
	GCC	49.48	27.84		TTG	14.76
	GCA	15.75			CTT	7.58
	GCG	18.29			CTC	19.38
Arg	AGA	7.66			CTA	7.24
	AGG	10.09			CTG	48.09	69.91
	CGT	15.10		Lys	AAA	26.52
	CGC	37.19	28.98		AAG	73.48	22.94
	CGA	12.71		Phe	TTT	35.10
	CGG	17.25			TTC	64.90	9.02
Asn	AAT	40.99		Pro	CCT	10.87
	AAC	59.01	3.27		CCC	38.11	17.04
Asp	GAT	46.25			CCA	22.03
	GAC	53.75	0.56		CCG	28.99
Cys	TGT	26.29		Ser	AGT	11.47
	TGC	73.71	23.42		AGC	28.95	24.22
Gln	CAA	24.57			TCT	7.97
	CAG	75.43	27.12		TCC	22.74
Glu	GAA	26.93			TCA	7.57
	GAG	73.07	22.12		TCG	21.30
Gly	GGT	15.62		Thr	ACT	14.27
	GGC	49.35	30.75		ACC	37.35	12.03
	GGA	22.75			ACA	20.34
	GGG	12.23			ACG	28.04
His	CAT	38.52		Tyr	TAT	35.54
	CAC	61.48	5.32		TAC	64.46	8.48
Ile	ATT	31.10		Val	GTT	14.20
	ATC	47.99	11.16		GTC	27.36
	ATA	20.91			GTA	9.10
					GTG	49.34	37.57

^aThe G test statistic for heterogeneity of synonymous codons within an amino acid group. Values in bold depict the percent usage of the identified major codon within an amino acid group.