Table 1.

Summary statistics for QTL pairs exhibiting epistasis for the activity traits throughout the 7 intervals

Interval	Number of pairs	False discovery rate	Number of chromosomes	Most frequent chromosomes (occurrences)
		Distance
1	15**	0.20	14	3, 12, 13 (4)
2	10**	0.30	14	4, 5, 9, 13, 18, 19 (2 Each)
3	11**	0.28	13	1, 3 (3)
4	8*	0.38	11	3, 6 (3 Each)
5	7*	0.38	11	2, 5, 7 (2 Each)
6	9**	0.34	11	5 (4)
7	10**	0.30	15	1, 3, 4, 5, 6, (2 Each)
All	71**	0.30	20	3 (16), 5 (11), 1, 12 (10)
		Duration
1	14**	0.22	15	3 (4)
2	13**	0.23	19	7 (3)
3	17**	0.18	16	17 (5)
4	11**	0.28	15	3 (4)
5	16**	0.19	17	3, 12 (4 Each)
6	11**	0.28	12	10 (4)
7	7*	0.43	9	5, 10 (3 Each)
All	89**	0.24	20	3 (20), 10 (18), 12 (15)
		Speed
1	11**	0.28	16	9 (3)
2	7	0.43	11	7, 9, X (2 Each)
3	10**	0.30	13	11 (3)
4	7	0.43	8	12, 15 (4 Each)
5	10**	0.30	12	1 (4)
6	9**	0.34	11	X (3)
7	7	0.43	11	12, 15, 18 (2 Each)
All	61**	0.37	20	12 (13), 1, 15, 18 (10 Each)

Shown are the number of QTL pairs reaching significance (P < 0.001), false discovery rates (=3.043/number of significant pairs), the number of different chromosomes involved in epistasis, and the chromosomes most frequently involved in epistasis (with the number of occurrences).

^*P < 0.05;

^**P < 0.01