Table 3.

Fractions of nucleotides at the three base sites of a codon in the coding sequence of Mycobacterium tuberculosis.

	T	C	A	G
First base	0.1632	0.3089	0.1724	0.3556
Second base	0.2036	0.3145	0.1763	0.3056
Third base	0.1645	0.3461	0.1593	0.3302