Table 3.
Genome | Number of TSSs Quarters 1,2 4 | Number of TSSs Quarter 3 | Total | Proportion | |
i | ii | iii | iv = ii + iii | v = iii/iv | |
A | real | 8803 | 6968 | 15771 | 44.2% |
B | hybrid | 5939 | 3924 | 9863 | 39.8% |
C | A – B | 2864 | 3044 | 5908 | 51.5% (X) |
D | real (random) | 9362 | 4386 | 13748 | 31.9% (Y) |
Quarter 3 is the region up to 50 kb downstream of the A+/T+ boundary. Quarters 1,2, 4 are the other parts of the region between 100 kb upstream and 100 kb downstream of this boundary. Row D refers to the control analysis in which TSSs are replaced by an equal number of random positions (the red line of Figure 9a). The figure of 51.5% (X) is significantly different from the figure 31.9% (Y) using a binomial distribution approximated by the normal distribution and a t-type test, p < 10-50, n1 = 5908, n2 = 13478, z = 25, one tailed test.