Table 3.

Mutation rates in control and exposed groups

Dose, Gy	Stage, weeks	Mutation rate per offspring band
		Total*	Ratio†	P-value‡	Paternal§	Ratio†	P-value‡	Maternal§	Ratio†	P-value‡
0	—	0.0123	—	—	0.0556	—	—	0.0463	—	—
0.5	6	0.0193	1.56	0.1711	0.1333	2.40	0.0995	0.0667	1.44	0.7510
0.5	10	0.0248	2.01	0.0129	0.1455	2.62	0.0457	0.0545	1.18	0.9999
0.5	6 + 10	0.0223	1.81	0.0198	0.1400	2.52	0.0325	0.0600	1.30	0.8280
1	3	0.0113	0.91	0.8930	0.0806	1.45	0.6267	0.0323	0.70	0.8285
1	6	0.0274	2.22	0.0015	0.2192	3.94	0.0003	0.0548	1.18	0.9978
1	10	0.0280	2.27	0.0134	0.2400	4.32	0.0026	0.0600	1.30	0.9831
1	6 + 10	0.0276	2.23	0.0008	0.2245	4.04	0.0001	0.0561	1.21	0.9404

^*Total mutation rate was estimated as the number of independent mutations scored in each animal per minisatellite band, assuming 30 bands per offspring. 

^†Ratio exposed to control. 

^‡Probability of difference from the control group (Fisher’s exact test, two-tailed; statistically significant values are in bold). 

^§Number of paternal and maternal mutations scored by two single-locus probes, Ms6-hm and Hm-2.