TABLE 1.

Maternal effect lethality of sax¹ and sax² mutations

			% lethality					Kr+ AS cells
Cross	Female genotype	Male genotype	Embryonic	Larval	Pupal	Total	n	No.b
A	Df(2R)ST1/+	+/+	11.3	5.1	4.4	20.9	273
B	Df(2R)H23/+	+/+	1.5	4.1	0.7	6.4	266
C	sax1/+	+/+	0	0.7	1.7	2.4	293
D	sax2/+	+/+	1.6	3.5	0.8	5.9	254
E	sax1/+	sax2/+	1	0.6	1.3	2.9	521
F	+/+	sax1/sax2	1	2.7	0.3	4.1	293
G	+/+	sax2/sax2	0.7	1.7	0.7	3.2	286
H	sax1/sax2a	+/+	100	0	0	100	971	28 ± 5
I	sax1/sax2	Dp(dpp+)/Dp(dpp+)	37.7	45.8	6	89.5	284
J	sax1/Df(2R)ST1	+/+	4.4	2.9	1.4	8.8	274
K	sax1/Df(2R)ST1	Dp(dpp+)/Dp(dpp+)	10.6	7.6	1	19.2	198
L	sax1/Df(2R)H23	+/+	85.2	12.4	0.3	97.9	290
M	sax1/Df(2R)H23	Dp(dpp+)/Dp(dpp+)	8.2	4.9	4.1	17.2	245
N	sax1/Df(2R)P32	+/+	91.7	7.2	0.7	99.7	279	42 ± 4
O	sax2/sax2	+/+	81.7	14.3	0.8	96.8	252
P	sax2/sax2	Dp(dpp+)/Dp(dpp+)	9.7	8.9	3.1	21.8	257
Q	sax2/Df(2R)ST1	+/+	2.2	11.9	4.1	18.4	267
R	sax2/Df(2R)ST1	Dp(dpp+)/Dp(dpp+)	11	10.5	2.9	24.4	209
S	sax2/Df(2R)H23	+/+	41.7	37.1	6.7	85.5	283
T	sax2/Df(2R)H23	Dp(dpp+)/Dp(dpp+)	5	5	0	10	238
U	sax2/Df(2R)P32	+/+	64.8	27.7	3.7	96.1	267	69 ± 5

Boldface genotypes and lethality values highlight the distinct behavior of sax*/sax* or sax*/sax* vs. sax*/Df(2R)H23 or sax*/Df(2R)H23 females. Underlined values indicate the failure of Df(2R)ST1 to uncover the sax maternal effect lethality.

^asax¹/sax¹ homozygotes are not shown due to the presence of a second site, unrelated, lethal on the chromosome, acquired since the isolatio of sax¹.

^bCompared to 164 ± 23 Kr⁺ aminoserosa (AS) cells present in wild-type embryos (Raftery et al. 1995).