TABLE 8

Tests for genetic interactions in double heterozygotes

gene-y
sys-1
gene-xq544/+qDf14/+pop-1/+sys-3/+gon-14/+gon-15/+gon-16/+
+/+<1 n = 5082 n = 4261 n = 1540 n = 1700 n = 1601 n = 2760 n = 398
sys-1
        q544/+ 100 n = 9221 n = 1523 n = 2920 n = 1440 n = 1040 n = 158
        qDf14/+ 55 n = 20215 n = 1961 n = 1903 n = 1802 n = 164
pop-1/+ 1 n = 1540 n = 1800 n = 1540 n = 170
sys-3/+ 0 n = 1660 n = 1940 n = 200
gon-14/+ 0 n = 1400 n = 154
gon-15/+ 0 n = 146

Values are percentage of DTCs missing, assayed by gonadal elongation. n, number of arms scored. For sys-1, both sys-1(q544) and the qDf14 deficiency were used. Other alleles were pop-1(q645), sys-3(q632), gon-14(q631), gon-15(q574), and gon-16(q568). The interaction between qDf14 and sys-3 is significant with P < 0.0001.