Table 3 

Number of genes – comparisons with hybrid genome – third quarter comparison 

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 ttype test, p < 10^{50}, n1 = 5908, n2 = 13478, z = 25, one tailed test. 

Evans BMC Genomics 2008 9:16 doi:10.1186/14712164916 