Figure 6. JIL-1 and HP1 control expression from the subtelomeric region of the fourth chromosome.

Reporter lines from the subtelomere domain (transition zone) of chromosome 4R, 39C-72 and 118E-5, were crossed with the heterozygous mutant alleles JIL-1 ^z60/+, JIL-1 ^h9 /+ and Su(var)2-5 ⁰⁵. The subtelomere domain of the 4^th chromosome shows a clear descent in eye color already with the simple JIL-1 heterozygous alleles, (2^nd and 3^rd columns) and a strong suppressor effect of TPE in the Su(var)2-5 ⁰⁵ allele (4^th column).