TABLE 5

The effect of an additional Y chromosome on the expression of the garnet+ gene on the Dp(1;f)LJ9 mini-X chromosome

Genotype (assay)X/DpX/Dp + Y
MAT (pigment)79 ± 594 ± 4
(visual)1.0 ± 01.0 ± 0
PAT (pigment)37 + 999± 4
(visual)0.07 ± 0.030.97 ± 0.03

The effect of an additional Y chromosome on the expression of the garnet gene in y za g53d/Dp(1;f)LJ9 males was assessed both by pigment assay and visually as described in materials and methods. The origin of the mini-X chromosome is shown on the left (MAT, maternally derived mini-X chromosome; PAT, paternally derived mini-X chromosome). Full, wild-type, garnet gene expression is 1.0 ± SEM by the visual estimation method and full garnet gene expression by the pigment assay method is 100% ± SEM wild-type pigment.