A clonal analysis of the relationship of duplicated bristles inDrosophila
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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.
Key wordsDrosophila Bristle formation Differential divisions Clonal analysis
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