Movement of bristle precursors contributes to the spacing pattern in Drosophila.

Abstract excerpt

In Drosophila melanogaster, microchaetes (small bristles) are regularly spaced and form five straight rows in the acrostichal region of the adult notum. Microchaetes develop from sensory organ precursors that arise as single, evenly-spaced cells during pupal development. In this article we address the question of how the precursor cells remain aligned throughout pupal development, in spite of continued division...

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