Codon usage in twelve species of Drosophila

Table 3 Linear regressions of GC content of introns on coding sequences of the same gene for each species.^a

	Coef^b	p-value^c	Rsq^d	N^e
mel	0.2460	2.52e-31	0.0412	3221
sim	0.1290	2.14e-07	0.0114	2344
sec	0.1570	1.62e-10	0.0169	2399
yak	0.1870	1.22e-13	0.0221	2463
ere	0.2460	1.86e-21	0.0364	2444
ana	0.2700	4.03e-26	0.0497	2195
pse	0.4140	9.82e-32	0.0708	1875
per	0.4210	1.05e-36	0.0802	1919
wil	0.2210	1.02e-21	0.0426	2109
vir	0.1780	3.58e-10	0.0160	2447
moj	0.1140	3.92e-05	0.0071	2374
gri	0.0588	2.42e-03	0.0034	2706

^aGC content in coding sequences was calculated from the 3rd codon positions of 2- and 4-fold redundant amino acids.
^bMultiplier coefficient of the linear model.
^cThe probability that the true coefficient value is different from zero.
^dThe fraction of total variability explained by the model.
^eThe number of genes used. Genes were chosen with the following criteria: from the homologous set we chose only genes that had at least one intron between 100 and 2000 bp in length after cleaning, and with at least 100 codons in the coding sequence.

ISSN: 2730-7182