Compositional Constraint Is the Key Force in Shaping Codon Usage Bias in Hemagglutinin Gene in H1N1 Subtype of Influenza A Virus

Table 2

Correlation between different nucleotide compositional parameters.

	A3%	T3%	G3%	C3%	GC3%	AT3%
A%	𝑟 = 0.425*	𝑟 = 0.444*	𝑟 = −0.366*	𝑟 = −0.471**	𝑟 = −0.264∧	𝑟 = 0.613**
T%	𝑟 = 0.539**	𝑟 = 0.653**	𝑟 = −0.577**	𝑟 = 0.512**	𝑟 = −0.695**	𝑟 = 0.537**
G%	𝑟 = −0.515**	𝑟 = −0.241∧	𝑟 = 0.542**	𝑟 = 0.089∧	𝑟 = 0.329∧	𝑟 = −0.426**
C%	𝑟 = −0.478**	𝑟 = −0.899**	𝑟 = 0.468**	𝑟 = 0.883**	𝑟 = 0.618**	𝑟 = −0.776**
GC%	𝑟 = −0.693**	𝑟 = −0.810**	𝑟 = 0.664**	𝑟 = 0.767**	𝑟 = 0.669**	𝑟 = −0.886**
AT%	𝑟 = 0.693**	𝑟 = 0.810**	𝑟 = −0.664**	𝑟 = −0.767**	𝑟 = −0.669**	𝑟 = 0.886**

∗Means correlation is significant at the level of 0.05.
**Means correlation is significant at the level of 0.001.
∧Means no correlation.