TABLE 1

Results of the experiments described in Figure 2A

Exp.G0πConditionsNumber of [v+]/total flies[v+] flies frequencyTransposition frequency
P1HR136Standard3/32870.9 × 10−31.8 × 10−3
S1HR133Standard4/49150.8 × 10−31.6 × 10−3
S2HR95Standard1/19580.5 × 10−31.0 × 10−3
S3HR133G1♀=y v3/93190.3 × 10−30.6 × 10−3
S4HR95G1♀=y v2/104100.2 × 10−30.4 × 10−3
T1HR133No heat shock0/9314<0.1 × 10−3<0.2 × 10−3
T2HR133Dev. 29°4/38911.0 × 10−32.0 × 10−3
T3HR133Standard4/72480.6 × 10−31.1 × 10−3
M1HR133Standard6/85290.7 × 10−31.4 × 10−3
M2HR133Standard3/95090.3 × 10−30.6 × 10−3
M3HN27Standard13/92431.4 × 10−32.8 × 10−3
M4HN10Standard9/99260.9 × 10−31.8 × 10−3
M5HN9Standard6/50291.2 × 10−32.4 × 10−3
  • All crosses were carried out following the general scheme depicted in Figure 2A. Standard conditions were as described in the text. In experiment T1, heat-shock treatments were omitted. In experiment T2, development of G2 females was at 29° from embryonic to late pupal stages. In experiments S3 and S4, G1 females were from the y v strain instead of from the misy strain. Experiments named with the same letter were done simultaneously. As transposition does not occur in half of the G2 females, transposition frequencies were estimated by multiplying by two the frequencies of [v+] flies recovered in G3.