Table 1.

+/+ clones induced in vas:lacZ/+ and ovo^D1/+ backgrounds

Heterozygous background	Age of clone induction, h ± 1 AEL	Total no. of germ cells (n)	n experiment replicas	n females scored	n females with clone	Mitotic recombination frequency	n females dissected	n clones in one ovary (frequency)	n clones in both ovaries (frequency)†	Average no. ovarioles with clone, 〈x〉 ± σ
vas:lacZ/+	2	20.1  ± 8.6 (22)	2	427	27	0.06	27	12 (0.44)	15 (0.56)‡	4.28  ± 2.44
	48	32.0  ± 4.7 (15)	2	491	40	0.08	40	35 (0.87)	5 (0.13)	2.24  ± 1.78
ovoD1/+	2	20.1  ± 8.6 (22)	3	2,302	85	0.04	34	24 (0.71)	10 (0.29)	9.45  ± 5.49
	6	24.5  ± 5.2 (33)	2	1,327	102	0.08	71	56 (0.79)	15 (0.21)	7.63  ± 4.11
	16	19.4  ± 3.8 (21)	2	704	73	0.10	45	33 (0.73)	12 (0.27)	8.46  ± 4.77
	24	19.2  ± 2.0 (4)	2	1,326	108	0.08	42	35 (0.83)	7 (0.17)	8.28  ± 4.83
	48	32.0  ± 4.7 (15)	2	246	56	0.23	37	20 (0.54)	17 (0.46)	6.74  ± 4.43
	80	39.0  ± 7.2 (13)	2	300	70	0.23	33	11 (0.33)	22 (0.67)	5.11  ± 4.08
	110	41.0  ± 7.6 (13)	2	512	50	0.10	51	15 (0.29)	36 (0.71)‡	2.46  ± 1.12
	174	50*	2	1,008	190	0.19	23	10 (0.43)	13 (0.57)	1.5  ± 0.64

^*Inferred from Wieschaus and Szabad (11). 

^† All frequencies of clones in both ovaries were only slightly higher than those predicted by the Poisson distribution, except for  

^‡, which were substantially higher (>10 times greater).