Table 1. Embryos from Fe and C-exposed males.

Dose, Gy	No. (experiment)	Stage exposed*	Fraction fertilized†	Embryos developed	Effective loci, 104	DL	TM	VM	DL frequency‡	TM frequency,§ 10−4
			56-GeV Fe-exposed males
Historical controls				27,870	12.2	700	4	1	0.025	0.33
0.3	48 (1)	Sperm	0.84	1,698	0.84	110	7	1	0.065	8.3
		Tids	0.87	4,024	2.00	191	12	0	0.048	6.0
		Gonia	0.86	11,288	5.89	520	11	1	0.046	1.9
1.0	36 (1)	Sperm	0.86	1,353	0.67	143	19	1	0.106	28
		Tids	0.82	2,925	1.45	276	43	0	0.094	30
		Gonia	0.83	8,411	4.32	382	13	1	0.045	3.0
1.0	38 (2)	Sperm	0.69	1,200	0.60	132	16	0	0.110	27
		Tids	0.73	3,436	1.71	291	45	2	0.085	26
		Gonia	0.47	8,359	4.16	318	2	1	0.038	0.48
2.0	40 (2)	Sperm	0.67	1,466	0.72	284	43	0	0.194	59
		Tids	0.69	3,122	1.54	548	78	5	0.176	51
		Gonia	0.33	7,368	3.64	287	2	1	0.039	0.55
			3.5-GeV C-exposed males
Historical controls				37,968	18.6	1,027	6	1	0.027	0.32
2.0	76	Sperm	—	927	.452	195	20	2	0.210	44
		Tids	—	2,093	1.03	268	26	2	0.128	25
		Gonia	—	5,735	2.99	327	6	1	0.057	2.0
4.75	80	Sperm	—	1,759	0.77	696	83	5	0.396	107
		Tids	—	3,629	1.58	1,064	127	9	0.293	80
		Gonia	—	3,189	1.60	460	53	3	0.144	33
8.07	40	Sperm	—	1,041	5.04	630	121	0	0.605	240
		Tids	—	2,055	10.0	940	176	5	0.457	176

^*Matings of exposed sperm, days 1-3; spermatids (tids), days 4-9; spermatogonia (gonia), days 32-149 for experiment 1 and days 46-117 for experiment 2. Only one experiment was performed for 3.5-GeV C-exposed males.

^†The no. of fertilized embryos divided by the no. of embryos laid. (Fraction fertilized not included for 3.5 GeV C-exposed males because data were only partially collected.)

^‡DL frequency per developed embryo.

^§TM per effective locus.