Drosophila headlines.
Recent genetic and molecular data from Drosophila support the long-standing observations of morphology in suggesting that segmentation of the insect embryo proceeds in two phases. Organization of the cephalic segments uses a mechanism distinct from the familiar bierarchical cascade of segmentation genes that subdivides the trunk of the embryo.
Howard Hughes Medical Institute, Department of Cell Biology, Baylor College of Medicine, Houston, TX 77030.
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D000818:Animals; D004331:Drosophila melanogaster / Q000196:embryology* / Q000235:genetics; D004625:Embryo, Nonmammalian / Q000033:anatomy & histology; D005314:Embryonic and Fetal Development; D005786:Gene Expression Regulation; D005801:Genes, Homeobox; D005809:Genes, Regulator; D006257:Head / Q000196:embryology*; D009024:Morphogenesis; D009994:Osmolar Concentration; D010641:Phenotype; D014158:Transcription, Genetic