bk1 << Khc << bk2

Df(2R)Jp7/Df(2R)Jp8 embryos retain a grossly normal number of sense organs. However, neuronal disruption is observed, most noticeable in the chordotonal organs. The dendrites of chordotonal organs are consistently malformed, appearing longer and often thicker than their wild-type equivalents. The dendrite tips occasionally appear enlarged around a non-staining "hole" at the point where the dendrite enters the scolopale. The scolopale itself is disorganised, and the arrangement of the neurons are also disorganised with their characteristic dendritic orientations often awry. The single exception to the observation that this combination of deficiencies is a duplication of v'ch1 chordotonal neurons.

Saxton.