1.6 kb deletion of the mir-124 locus created by ends-out gene targeting. Deletion boundaries inferred from primer sequences.
Homozygous adults show significantly reduced ability in a climbing assay compared to controls and only 5% of adults can fly.
Homozygous third instar larvae show a significant reduction in branch length and the number of both type Ib and Is boutons at neuromuscular junction (NMJ) 6/7 compared to controls (significant differences to controls are not seen at NMJ 4).
The ddaE dendritic arborization neurons show a significant reduction in the number of dendritic branches in homozygous third instar larvae.
mir-124KO is partially rescued by Scer\GAL4elav.PU/mir-124UAS.cWa
The reduced climbing and flight abilities of homozygous mir-124KO adults are partly rescued by expression of mir-124Scer\UAS.cWa under the control of Scer\GAL4elav.PU. The reduced fertility of homozygous mir-124KO females is also rescued.