Reduced morphogen availability causes a reduction in
haltere size relative to the wing.
Not exact matches
Thus I was able to ask how the expression of this single gene limits the
size of the
haltere.
In the
haltere, the same is true of the regulator of the
size regulators: Heterozygous Ubx mutant flies have enlarged
halteres (1), and flies with extra copies of the Ubx locus have shrunken
halteres (7).
Ubx reduces the
size of the
haltere imaginal disc relative to that of the wing by decreasing the production and mobility of growth - promoting morphogens (for example, Dpp).
The alterations in transcription of dpp and tkv account for much of the reduced
size of the
haltere relative to the wing (2).