P-element insertion at 1st base of Spt-I.
abnormal neuroanatomy | adult stage (with Spt-IB2)
partially lethal - majority die (with Spt-IP1)
partially lethal - majority die (with Spt-ISH1626)
partially lethal - majority live (with Spt-IB2)
partially lethal - majority live (with Spt-Il(2)49Fb-4)
viable
lobe system of adult mushroom body (with Spt-IB2)
Spt-IKG06460/Spt-IB2 transheterozygous adults show mushroom body defects, namely a "lost-lobe" phenotype; Spt-IKG06460/Spt-IP1 transheterozygotes rarely show the defect.