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The short-period mutant, toc1-1, alters circadian clock regulation of multiple outputs throughout development in Arabidopsis thaliana.
The coordination of developmental and physiological events with environmental signals is facilitated by the action of the circadian clock. Here we report a new set of circadian clock-controlledExpand
Abnormalities in somite segmentation following heat shock to Xenopus embryos.
The typical abnormality induced by a 15 min shock at 37degreesC is a single discrete length along the somite file within which segmental boundaries are absent or irregular. The two sides of the sameExpand
The isolation and characterization of mutants of the C4 photosynthetic pathway
Three novel classes of the C4 plant Amaranthus edulis are described. (1) A mutant that contains less than 10% of the normal activity and protein of phosphoenol-pyruvate carboxylase. (2) A mutant thatExpand
Polyteny and the functional significance of the polytene cell cycle.
  • M. Pearson
  • Biology, Medicine
  • Journal of cell science
  • 1 July 1974
Polyteny is a special nuclear differentiation reported in larval and adult Diptera, Collembola, Protista and angiosperm ovular nuclei. In not all cases, however, do discrete giant chromosomesExpand
Somitogenesis in amphibia. II. Origins in early embryogenesis of two factors involved in somite specification.
  • T. Elsdale, M. Pearson
  • Biology, Medicine
  • Journal of embryology and experimental morphology
  • 1 October 1979
A somite pre-pattern is established shortly before visible segmentation. The pre-pattern results from the interaction of two components: a wave of cell behavioural change that passes along the axis,Expand
Imaginal Disks and the Abdominal Histoblasts of Calliphora erythrocephala (Diptera)
SINCE 1946 imaginal disks of Drosophila have been subjects for experimental morphogenesis3 because of their morphological discreteness, the long period they remain undifferentiated in the larva, andExpand
The isolation and characterisation of a mutant of the C4 plant Amaranthus edulis deficient in NAD-malic enzyme activity
Abstract. A mutant of Amaranthus edulis (Speg.) lacking activity of the C4 leaf form of NAD-malic enzyme (ME; EC 1.1.1.39) has been isolated. Homozygous mutant (5% wild-type ME activity) andExpand
Somitogenesis in amphibian embryos. I. Experimental evidence for an interaction between two temporal factors in the specification of somite pattern.
Somitogenesis is described in two species of anuran amphibians, Xenopus laevis and Rana temporaria, in which the cellular mechanics of somite formation are distinctly different. Heat shocks areExpand
The abdominal epidermis of Calliphora erythrocephala (Diptera). I. Polyteny and growth in the larval cells.
  • M. Pearson
  • Biology, Medicine
  • Journal of cell science
  • 1 October 1974
The extremely rapid growth of feeding larvae of Calliphora is achieved with a hypertrophy of larval epidermal cells and concomitant polytene specialization of their nuclei. Within the epidermis ofExpand
The relation between larval and adult abnormalities in the abdominal segmentation of Calliphora erythrocephala (Diptera).
  • M. Pearson
  • Biology, Medicine
  • Journal of embryology and experimental morphology
  • 1 October 1974
Early embryonic stages of Calliphora erythrocephala were X-irradiated to produce abdominal abnormalities of segmental pattern. Abnormal patterns were examined in the puparial stage: 75 (Series AA)Expand
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