Table 1. Summary of test results for the null hypothesis that gene locations are uniformly distributed in the four species.

	No. intergenic distances	Estimated rate parameter *	Estimated standard error of	P-value**
B. distachyon	52	0.174	0.024	0.330
Rice	57	0.167	0.022	0.064
Sorghum	62	0.170	0.022	0.007
Ae. tauschii	81	0.012	0.001	0.000

^*The estimated exponential rate parameter is the maximum likelihood estimator of as given in Equation (1).

^**Based on a χ²- goodness of fit test.