Table 3

GC and AT-skew indices
Mean A + T AT Mean C + G GC
(%) skew (%) skew
XL 62.4 −0.01 37.6 −0.32
ST 56.2 0.01 43.8 −0.37
XB 62.7 −0.06 37.3 −0.25
XV 61.3 −0.02 38.7 −0.35
ALL 60.7 −0.02 39.3 −0.32
SD 3.4 −0.3 3.6 −0.6

Percentage mean ± standard deviation (SD) base-pairs in xenopus H-strand protein-coding genes. Skew (or “asymmetry”) between base-pairs was calculated as follows: GC skew = (G – C)/total(GC) and AT skew = (A – T)/total(AT).

Lloyd et al.

Lloyd et al. BMC Genomics 2012 13:496   doi:10.1186/1471-2164-13-496

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