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EMBO J. 1985 Jul;4(7):1625-30.

Molecular analysis of instability in flower pigmentation of Antirrhinum majus, following isolation of the pallida locus by transposon tagging.

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John Innes Institute, Colney Lane, Norwich, NR4 7UH, UK.


The pal locus of Antirrhinum majus was cloned using the transposable element, Tam 3, as a probe. The pal clone was used to examine, at the molecular level, those aspects of instability previously observed phenotypically and genetically. The effects of temperature and of genetic background on excision of the element at pal are considered, and related quantitatively to the phenotype. We describe the identification of the transcript of the pal locus and show that insertion of Tam 3 blocks the production of a normal pal transcript in developing flower buds.


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