Table 1.

Structural Chromosomal Abnormalities in Sperm of Four Healthy Men Evaluated by the ACM Assay

	Frequencies Per 104 Sperm for Donor
Genotype	D1a	D2b	D3c	D4d	Mean ± SE
Segmental aneuploidies:
1pter duplication	5.3	4.6	3.0	4.9	4.5 ± .5
1pter deletion	7.3	4.0	1.0	3.9	4.1 ± 1.3
Total	12.6	8.6	4.0	8.8	8.5 ± 1.8
1cen-1q12 duplication	.7	0	2.0	1.0	.9 ± .4
1cen-1q12 deletion	1.3	.7	1.0	0	.8 ± .3
Total	2.0	.7	3.0	1.0	1.7 ± .5
Chromosomal breaks:
Between 1cen and 1q12e	2.7	.7	4.0	1.0	2.1 ± .8
Within 1q12 regionf	11.3	16.5	9.0	11.0	12.0 ± 1.6
Total	14.0	17.2	13.0	12.0	14.1 ± 1.2

^a15,073 sperm analyzed.

^b15,145 sperm analyzed.

^c10,087 sperm analyzed.

^d10,116 sperm analyzed.

^eGroup 1 (fig. 2C).

^fGroups 2–10 (fig. 2C).