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).