Title

Expression Patterns Of Developmental Genes Reveal Segment And Parasegment Organization Of D-Melanogaster Genital Discs

Authors

Authors

D. E. Freeland;D. T. Kuhn

Comments

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Abbreviated Journal Title

Mech. Dev.

Keywords

Drosophila; genital discs; organization of genital discs; DROSOPHILA-MELANOGASTER; IMAGINAL DISKS; BITHORAX COMPLEX; ABDOMINAL-B; EMBRYOS; COMPARTMENTS; WINGLESS; PRODUCTS; HEDGEHOG; REGIONS; Developmental Biology

Abstract

We have used the expression patterns of genes known to be important during early Drosophila development to determine the segment-parasegment organization of the genital discs and to localize the three primordia in the male and female genital discs. engrailed (en) and hedgehog (hh) were used to locate posterior compartments in A8-A10, while cubitus interruptus (ci) localized the anterior compartments for each segment. decapentaplegic (dpp) identified the anterior cells that abut en and hh at the anterior-posterior border. abdominal-A (abd-A) identified the anterior compartment for abdominal segment 8 (aA8) in females but was not detected in the repressed female primordium in male discs. Abdominal-B (Abd-B) was expressed throughout the discs except for a small area along the edge of the posterior lobes, leaving open the possibility that All may contribute to the genital discs. caudal (cad) was expressed segmentally in the anal primordium of A10, extending through the Abd-B unstained region. wingless (wg) and gooseberry (gsb) may have assumed an added role in the discs perhaps providing proximal-distal cues. Models are presented to show how the segments and parasegments may fuse together during embryogenesis to form the mature male and female genital discs.

Journal Title

Mechanisms of Development

Volume

56

Issue/Number

1-2

Publication Date

1-1-1996

Document Type

Article

Language

English

First Page

61

Last Page

72

WOS Identifier

WOS:A1996UT14100005

ISSN

0925-4773

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