| Variegating rearrangements Updated October 20, 2016 |
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Introduction
These stocks carry chromosomal rearrangements that juxtapose euchromatin and heterochromatin and show variegated expression of the white gene, the brown gene or other genes.
In some of these stocks, variegated gene expression is suppressed by the presence of known Su(var) mutations. In other stocks, variegated expression has become suppressed from the accumulation of unknown modifiers. It is often necessary to cross variegating rearrangements into different genetic backgrounds to see robust variegated gene expression.
Rearrangements causing variegated expression of the white gene
The most commonly used rearrangement causing variegation of white is In(1)w[m4]. Stocks with In(1)w[m4] are shown here. Stocks with other w-variegating rearrangements are shown in the table below.
| Symbol | Stk # | Genotype | |
|---|---|---|---|
| 1 | Dp(1;3)w[vco] | 735 | Df(1)w258-48, y[1] sc[5] N[spl-1]/C(1)DX, y[1] f[1]; Dp(1;3)w[vco]/+ |
| 2 | T(1;4)w[m5] | 850 | T(1;4)w[m5]/Dp(2;4)ey[D], Alp[eyD]: ey[D] |
| 3 | T(1;4)w[m258-21] | 852 | T(1;4)w[m258-21], y[1] w[a]/FM4 |
| 4 | Dp(1;3)w[vco] | 1527 | Df(1)w258-45, y[1]/Y/C(1)DX, y[1] w[1] f[1]; Dp(1;3)w[vco] |
| 5 | In(1)w[vC] | 3964 | In(1)dl-49, y[1] ac[Hw-1] m[2] g[4] f[5]/R(1)2, In(1)w[vC] |
| 6 | Ts(1Lt;4Lt)w[m5] | 4059 | Dp(1;1)Co, y[2] w[a]/Ts(1Rt;4Rt)w[258-21]; Ts(1Lt;4Lt)w[m5]/ci[1] ey[R] |
| 7 | In(1)w[vC] | 4077 | R(1)2, In(1)w[vC], f[1]/C(1)DX, y[1] f[1]/Dp(1;Y)y[+] |
| 8 | Dp(1;3)w[vco] | 4664 | l(1)2Fb[3]/C(1)DX, y[1] w[1] f[1]; Dp(1;3)w[vco]/+ |
| 9 | Dp(1;3)w[m76] | 9144 | y[1] crm[sa2] sn[3]; Dp(1;3)w[m76] |
Rearrangements causing variegated expression of the brown gene
The brown-variegating rearrangement Dp(?;2)bw[D] is present in many stocks. A list is provided here. Stocks with other bw-variegating rearrangements are shown in the table below.
| Symbol | Stk # | Genotype | |
|---|---|---|---|
| 1 | In(2LR)bw[V1] | 224 | Df(2R)cn87e/In(2LR)bw[V1], ds[33k] b[1] bw[V1] |
| 2 | In(2LR)bw[V1] | 326 | In(2L)t, l(2)a[1] bs[3]/In(2LR)bw[V1], ds[33k] bw[V1] |
| 3 | In(2R)bw[V34k] | 341 | M(2)31A[3]/In(2L)Cy, In(2R)Cy, In(2R)bw[V34k], Duox[Cy] bw[V34k] |
| 4 | In(2LR)bw[V1] | 380 | px[1] bw[1] mr[1] sp[1]/In(2LR)bw[V1], ds[33k] bw[V1] |
| 5 | In(2R)bw[VDe1] | 670 | v[1]; In(2R)bw[VDe1], bw[VDe1]/SM1 |
| 6 | In(2LR)bw[V1] | 689 | In(2L)Cy, In(2R)Cy, Duox[Cy] sp[2]/In(2LR)bw[V1], ds[33k] dpy[ov1] b[1] bw[V1]; DcxF/In(3R)Mo, Sb[1] sr[1] |
| 7 | In(2LR)bw[V1] | 742 | Df(2R)rl10a, lt[1] rl[10a] cn[1]/In(2LR)bw[V1], ds[33k] bw[V1] |
| 8 | In(2R)bw[VDe2L]Cy[R] | 749 | In(2R)bw[VDe2L]Cy[R]/In(2LR)Gla, wg[Gla-1] |
| 9 | In(2LR)bw[V1] | 1580 | In(2LR)bw[V1], ds[33k] bw[V1]/SM5 |
| 10 | In(2R)bw[VDe2] | 1582 | In(2LR)Gla, wg[Gla-1] PPO1[Bc]/In(2R)bw[VDe2], bw[VDe2] |
| 11 | In(2LR)bw[V32g] | 2471 | Df(2R)M60E/In(2LR)bw[V32g], bw[V32g] |
| 12 | In(2LR)bw[V1] | 3133 | Df(2L)dp-79b, dpy[DA] cn[1]/In(2LR)bw[V1], ds[33k] b[1] bw[V1] |
| 13 | In(2LR)bw[V1] | 3170 | In(2LR)bw[V1], ds[33k] l(2)DTS18WF[1] bw[V1]/CyO |
| 14 | In(2LR)bw[V1] | 3705 | T(2;3)CyO-TM9, CyO: TM9, l(3)DTS4[1]/In(2LR)bw[V1], ds[33k] bw[V1]; H[1] |
| 15 | In(2LR)bw[V1] | 4253 | T(2;3)A1-W, In(2L)Cy, In(2R)Cy, Duox[Cy] L[1]: TM2/T(2;3)Ubx[B18], In(2LR)bw[V1], bw[V1] Sb[1] Ubx[B18] |
| 16 | In(2LR)bw[V1] | 4525 | Ruf[1]/In(2LR)bw[V1], ds[33k] bw[V1] |
| 17 | In(2LR)lt[G16L]bw[V32gR] | 7258 | Df(2R)bw-WI366, cn[1] P{w[+t11.7] ry[+t7.2]=wA}3-1/In(2LR)lt[G16L]bw[V32gR], bw[V32g] |
| 18 | In(2LR)lt[G16L]bw[V32gR] | 7261 | w[1118]; Df(2R)bw-WI3121 cn[1] P{w[+t11.7] ry[+t7.2]=wA}3-1/In(2LR)lt[G16L]bw[V32gR], bw[V32g] |
| 19 | In(2LR)lt[G16L]bw[V32gR] | 7262 | Df(2R)bw-WI3128, cn[1]/In(2LR)lt[G16L]bw[V32gR], bw[V32g] |
| 20 | In(2LR)bw[V1] | 8500 | In(2L)Cy, In(2R)Cy, Duox[Cy] sp[2]/In(2LR)bw[V1], ds[33k] dpy[ov1] b[1] bw[V1]; Lcp65Ab1[Rho] |
| 21 | In(2LR)bw[V1] | 9489 | w[*]; In(2LR)bw[V1], ds[33k] dpy[ov1] b[1] bw[V1]/CyO, P{w[+mC]=tubP-GAL80}OV2 |
| 22 | In(2LR)bw[V1] | 9492 | T(Y;3)Antp[Ns-rv3], l(3)DTS4[1] Antp[Ns-rv3]/w[*]; In(2LR)bw[V1], ds[33k] dpy[ov1] b[1] bw[V1]/CyO |
| 23 | In(2LR)bw[V1] | 9493 | w[*]; CyO/In(2LR)bw[V1], ds[33k] dpy[ov1] b[1] bw[V1]; CxD/TM6B, Tb[1] |
| 24 | In(2LR)lt[G16L]bw[V32gR] | 36569 | Df(2R)or-BR6, cn[1] bw[1] sp[1]/In(2LR)lt[G16L]bw[V32gR], bw[V32g] |
| 25 | Dp(?;2)bw[D] | 42666 | Fs(2)Ket[1] lt[1] bw[1]/Dp(?;2)bw[D], S[1] wg[Sp-1] Ms(2)M[1] bw[D]/CyO |
Rearrangements causing variegated expression of other genes
In the case of 'unknown vital gene', the juxtaposition of an unknown euchromatic gene with heterochromatin causes lethality of XO males, but not XY males.
For 'X chromosome puffing', the X chromosome is hypertranscribed in some salivary gland nuclei but not others.
| Gene affected | Symbol | Stk # | Genotype | |
|---|---|---|---|---|
| 1 | X chromosome puffing | In(1)B[M2] | 774 | In(1)B[M2], In(1)f[B15], B[M2] |
| 2 | rst | In(1)rst[3] | 788 | In(1)rst[3], y[1] car[1] |
| 3 | lt | T(1;2)lt | 832 | T(1;2)lt/In(2L)Cy, In(2R)Cy, Duox[Cy] |
| 4 | Pu | T(2;3)Pu[W] | 873 | T(2;3)Pu[W], Pu[W]/In(3LR)C3x |
| 5 | Sb | T(2;3)Sb[V] | 878 | T(2;3)Sb[V], In(3R)Mo, Sb[1] sr[1]/TM3, Ser[1] |
| 6 | f | Dp(1;1)f[+ih] | 996 | Dp(1;1)f[+ih], Df(1)os[1], f[5] upd1[os-1] |
| 7 | unknown vital gene | T(1;2)l-v25 | 3817 | T(1;2)l-v25, y[1]/FM6 |
| 8 | unknown vital gene | T(1;3)l-v455 | 3830 | T(1;3)l-v455, y[1]/FM6 |
| 9 | y | In(1)y[3P] | 4246 | In(1)y[3P]; Su(y[3P])[1]/Me[1] |
| 10 | B | Dp(1;Y)B[SCV] | 4298 | Dp(1;Y)B[SCV], y[+]/Inscy |
| 11 | pn | In(1LR)pn2a | 6030 | In(1LR)pn2a, Vinc[1]/FM7c, sn[+]/Dp(1;Y)B[S] |
| 12 | lacZ | In(3L)BL1 | 57370 | y[1] w[*]; In(3L)BL1, P{w[enh]=HS-lacZ.scs}65E/TM3, Ser[1] |
| 13 | w | In(3L)BL1 | 57370 | y[1] w[*]; In(3L)BL1, P{w[enh]=HS-lacZ.scs}65E/TM3, Ser[1] |
| 14 | lacZ | Dp(3;Y)BL2 | 57371 | y[1] w[*]/Dp(3;Y)BL2, P{w[enh]=HS-lacZ.scs}65E |
| 15 | w | Dp(3;Y)BL2 | 57371 | y[1] w[*]/Dp(3;Y)BL2, P{w[enh]=HS-lacZ.scs}65E |