 b\) The distribution of Sqt-dsRED in [Figure 0D](#fig0){ref-type="fig"} looks very different from that of Sqt-GFP in [Figure 0](#fig0){ref-type="fig"} and from that of Vg-0 in the presence of Sqt in [Figure 0B](#fig0){ref-type="fig"}. Why is this so?  