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Proc. Natl. Acad. Sci. USA Vol. 96, pp. 1022410229, August 1999
 

Summary: Proc. Natl. Acad. Sci. USA
Vol. 96, pp. 1022410229, August 1999
Evolution
Homeotic genes and the arthropod head: Expression patterns of
the labial, proboscipedia, and Deformed genes in crustaceans
and insects
ARHAT ABZHANOV AND THOMAS C. KAUFMAN*
Howard Hughes Medical Institute, Department of Biology, Indiana University, Bloomington, IN 47405
Communicated by Edward B. Lewis, California Institute of Technology, Pasadena, CA, June 25, 1999 (received for review March 22, 1999)
ABSTRACT cDNA fragments of the homologues of the
Drosophila head homeotic genes labial (lab), proboscipedia (pb),
and Deformed (Dfd) have been isolated from the crustacean
Porcellio scaber. Because the accumulation domains of the
head homeotic complex (Hox) genes had not been previously
reported for crustaceans, we studied the expression patterns
of these genes in P. scaber embryos by using in situ hybrid-
ization. The P. scaber lab homologue is expressed in the
developing second antennal segment and its appendages. This
expression domain in crustaceans and in the homologous
intercalary segment of insects suggests that the lab gene

  

Source: Azevedo, Ricardo - Department of Biology and Biochemistry, University of Houston

 

Collections: Biology and Medicine; Environmental Sciences and Ecology