title: A clonal analysis of the relationship of duplicated bristles inDrosophila.
abstract: Two possible mechanisms are considered for the occurrence of experimentally or genetically induced duplications of bristles: extra cell division of a bristle mother cell versus determination of more than one mother cell. From a clonal analysis it appears that duplications induced by actinomycin-D arise by the latter mechanism, whereas those found in the mutantspl seem to arise by the former mechanism.
authors.affiliation: Genetisch Laboratorium der Rijksuniversiteit, Kaiserstraat 63, Leiden, The Netherlands.
authors.forename: F M A
authors.initials: FM
authors.lastname: van Breugel
authors.affiliation: Genetisch Laboratorium der Rijksuniversiteit, Kaiserstraat 63, Leiden, The Netherlands.
authors.forename: Q J M
authors.initials: QJ
authors.lastname: van der Aart
keywords: Bristle formation; Clonal analysis; Differential divisions; Drosophila