Nucleotide substitution: G2462A.
Amino acid replacement: ?821term.
Point mutation.
T31583874A
G2462A
L821term | rod-PA
L821term
The mutation is reported as G2462A but there is a T nucleotide at position 2462 relative to the ATG (in codon 821) in the reference sequence. T to A change at this site leads to a nonsense mutation.
Mutant spermatocytes have a normal number of Golgi structures but their morphology is highly irregular.
Spermatids from mutant third instar larvae testes do not show cytokinesis defects.
The acroblast of rod1100 spermatids appears as an aggregate of multiple unfused vesicles in ~half of cases, while it appears as a continuous structure (as in wild type) in the other half.
Chromosome disjunction in mutant spermatocytes is highly asynchronous. During anaphase the dyads either fail to undergo poleward motion, or move polewards at a greatly attenuated rate.
mst2, rod1100 has abnormal mitotic cell cycle | larval stage phenotype