title: Developmental evolution: torso--a story with different ends?
abstract: The Torso pathway patterns the ends of the Drosophila embryo. Now, it has been found to control axis elongation in the short germ insect Tribolium. This result raises the issue of the ancestral function of the Torso pathway and its evolution.
authors.affiliation: Institut de Biologia Molecular de Barcelona (CSIC), Spain. jcrbmc@cid.csic.es
authors.forename: Jordi
authors.initials: J
authors.lastname: Casanova
mesh_terms: D000818:Animals; D005075:Biological Evolution; D019521:Body Patterning / Q000502:physiology*; D004330:Drosophila / Q000196:embryology* / Q000378:metabolism; D029721:Drosophila Proteins / Q000378:metabolism*; D018507:Gene Expression Regulation, Developmental; D010641:Phenotype; D020794:Receptor Protein-Tyrosine Kinases / Q000378:metabolism*; D015398:Signal Transduction / Q000502:physiology*; D013045:Species Specificity; D014231:Tribolium / Q000196:embryology / Q000378:metabolism
chemical_list: D029721:Drosophila Proteins; D020794:Receptor Protein-Tyrosine Kinases; C080148:tor protein, Drosophila