Nucleotide substitution: G1964T, in a splice donor site. This results in a C-terminally truncated protein.
G19031820T
Altered splice donor site; results in a 489aa polypeptide.
macrochaeta & head
macrochaeta & thorax
Mutants have a glial overmigration phenotype in the eye disc.
Flies exhibit pleiotrophic phenotypes including abnormal bristle morphology (bristles often have a sharp bend and the tips are blunt instead of tapered) and light-dependent eye degeneration (degeneration is reduced but not completely suppressed in the dark).
Bristles nearly all hooked at tip or blunted, some bent at right angles. Scutellars and verticals especially affected. Acrostichal hairs fewer and outer rows separated. Eyes slightly roughened. Wings usually divergent and may be smaller. Body sometimes small and chunky. Less extreme expression at 19oC, especially the wing character, but classification reliable. RK2.
hk[+]/hook1 is an enhancer of visible phenotype of Scer\GAL4GMR.PF, bchsEP2299
hk[+]/hook1 is an enhancer of embryonic/larval cuticle phenotype of baz4
hk[+]/hook1 is an enhancer of embryonic/larval cuticle phenotype of bazG0484
hk[+]/hook1 is an enhancer of eye phenotype of Scer\GAL4GMR.PF, bchsEP2299
The cuticle phenotype of dead embryos derived from baz4/+ embryos derived from a cross of baz4/+ females to wild-type males is enhanced if the females also carry one copy of hk1.
The cuticle phenotype of dead embryos derived from bazG0484/+ embryos derived from a cross of bazG0484/+ females to wild-type males is enhanced if the females also carry one copy of hk1.
hook1 is not rescued by hook1-551.hs.2sev
hook1 is not rescued by hook248-679.hs.2sev
Mohr, 4th Jan. 1924.
Homozygotes and hemizygotes show degeneration of the eye. This is probably due to a second site mutation on the hk1 chromosome, as hk1/hk11, hk11/Df(2L)TW130 flies and flies overexpressing hk1-551.GMR.T:Hsap\MYC do not show any sign of eye degeneration.