From: Strand bias in complementary single-nucleotide polymorphisms of transcribed human sequences: evidence for functional effects of synonymous polymorphisms
Region
A
T
G
C
Total
Intron*
126,530,426 (28.0%)
139,073,101 (30.7%)
94,268,606 (20.8%)
92,418,338 (20.4%)
452,290,471 (100.0%)
FFD codons
575,500 (19.5%)
615,324 (20.8%)
822,103 (27.8%)
939,137 (31.8%)
2,952,064 (100.0%)