Fig. 2. Tethered HP1 causes silencing at some, but not all, genomic sites. The left
column shows the eye phenotype observed for stocks 157.1, J3.2 and S9.2 with
and without tethered GFP-lacI. The middle column shows the eye
phenotype with and without tethered lacI-HP1. The right column shows
localization of the lacI-HP1 fusion protein on polytene chromosomes.
The arrow denotes the location of lac repeats. Polytene chromosomes
were stained with antibodies against lacI (green).