TABLE 1

Progeny ratios and fertility of Df(1)X-1/BSYy+ males carrying rDNA insertions

Sperm classes
Insertion nameaRef.bNo. of 240-bp repeatsNo. of malesXYXYOFcPdRXeRXf
A. Controls
1. No insertion101022713717168763013.70.510.290.076
2. Normal X>1000271651161226121.10.9971.020.98
B. [rib7] insertions
1. 1A1-421114825721693523177144.40.640.670.44
2. 1A5-821119631381930712199239.70.600.760.47
3. (1A1-4) × 22221022823174577676759.90.771.300.79
4. 1A+2EF22235113772928546374.70.770.980.63
C. Deletions derived from [rib7](1A1-4)
1. 20131165103134576253424.20.510.300.10
2. 202311941649534151433534.40.480.340.11
3. 210321411650648212296938.80.520.430.17
4. 2113859109247311788343.50.670.550.24
5. 7B381662330813188307338.60.620.420.15
6. 42A35-61311543697210305342.00.530.390.18
7. U+37168111933169231822.80.560.320.09
8. 49A3511455619738192623.80.510.240.08
9. HJ+B31038159651411580479.70.800.670.34
D. [rib10] insertions
1. 12F-1462172487757150354432.00.570.370.11
2. 12F-241219479293537756502088.90.730.580.26
3. 16AB4621227871164312387638.40.530.440.18
E. [rib10Δ3] insertions
1. 14D4649856352119107849.10.590.520.21
2. 1A-1415851413629113831.30.550.310.082
3. 1A-24113983460320455856.40.720.710.51
F. [rib6ΔH] insertions
1. 1F484747613426101135.00.480.300.085
2. 5CD485341210016120732.70.510.230.056
3. 18AB484810219753513.80.510.260.049
4. 6E+12B416511275490121154567.30.640.450.17
G. [rib12] insertions
1. 6F50NKg798203642163NKg0.550.340.087
2. 7C50NKg1115269462971NKg0.500.250.061
  • a Cytological locations of insertions are given.

  • b References: 1. McKee and Lindsley 1987; 2. McKee and Karpen 1990; 3. McKee et al. 1992; 4. Merrill et al. 1992; 5. Ren et al. 1997.

  • c Fertility (F) = no. of progeny per male.

  • d X-Y disjunction (P) = fraction of meiosis I segregations with X and Y to opposite poles, calculated from cytological data. See materials and methods for formula.

  • e X chromosome recovery (R) = viability of X-bearing sperm relative to genotypically identical sperm without the X. See materials and methods for formula.

  • f Y chromosome recovery (RY) = viability of Y-bearing sperm relative to genotypically identical sperm without the Y. See materials and methods for formula.

  • g Not known.