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  1. How many signals does it take?T. V. Venkatesh & Rolf Bodmer - 1995 - Bioessays 17 (9):754-757.
    Although the genetics of dorsal‐ventral polarity which leads to mesoderm formation in Drosophila are understood in considerable detail, subsequent molecular mechanisms involved in patterning the mesoderm primordium into individual mesodermal subtypes are poorly understood. Two papers published recently (1,2) suggest strongly that an inductive signal from dorsal ectoderm is involved in subdividing the underlying mesoderm, and present evidence that one of the signalling factors is Decapentaplegic (Dpp), a member of the bone morphogenetic protein subgroup of the Transforming Growth Factor‐β (TGF‐β) (...)
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  • Butterfly eyespot patterns: Evidence for specification by a morphogen diffusion gradient.Antónia Monteiro, Vernon French, Gijs Smit, Paul M. Brakefield & Johan A. J. Metz - 2001 - Acta Biotheoretica 49 (2):77-88.
    In this paper we describe a test for Nijhout's hypothesis that the eyespot patterns on butterfly wings are the result of a threshold reaction of the epidermal cells to a concentration gradient of a diffusing degradable morphogen produced by focal cells at the centre of the future eyespot. The wings of the nymphalid butterfly, Bicyclus anynana, have a series of eyespots, each composed of a white pupil, a black disc and a gold outer ring. In earlier extirpation and transplantation experiments (...)
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  • Uncoupling growth from the cell cycle.Laura A. Johnston - 1998 - Bioessays 20 (4):283-286.
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  • Axes, boundaries and coordinates: The ABCs of fly leg development.Lewis I. Held - 1995 - Bioessays 17 (8):721-732.
    Recent studies of gene expression in the developing fruitfly leg support a model – Meinhardt's Boundary Model – which seems to contradict the prevailing paradigm for pattern formation in the imaginal discs of Drosophila – the Polar Coordinate Model. Reasoning from geometric first principles, this article examines the strengths and weaknesses of these hypotheses, plus some baffling phenomena that neither model can comfortably explain. The deeper question at issue is: how does the fly's genome encode the three‐dimensional anatomy of the (...)
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  • The function of vestigial in Drosophila wing development: How are tissue‐specific responses to signalling pathways specified?Jose F. de Celis - 1999 - Bioessays 21 (7):542-545.
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  • Controlling growth of the wing: Vestigial integrates signals from the compartment boundaries.Stephen M. Cohen - 1996 - Bioessays 18 (11):855-858.
    In the past few years it has become apparent that the anterior/posterior (A/P) and dorsal/ventral (D/V) compartmant boundaries serve as the source of longrange signals that organize the A/P and D/V axes of the Drosophila wing. Recent work suggests that the vestigial gene may function as a nodal point through which the growth‐controlling activity of these two patterning systems is integrated(1).
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  • The function of vestigial in Drosophila wing development: How are tissue-specific responses to signalling pathways specified?Jose F. De Celis - 1999 - Bioessays 21 (7):542-545.
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