Amino acid replacement: K230term.
A17480161T
K230term | fws-PA; K230term | fws-PC; K230term | fws-PD; K230term | fws-PH; K230term | fws-PI
K230term
Site of nucleotide substitution in mutant inferred by FlyBase based on reported amino acid change.
spermatid & nucleus | supernumerary
A large proportion of fwsZ1201 mutant spermatids have one large nebenkern with four nuclei of normal size, indicating a cytokinetic failure in both meiotic divisions. A smaller proportion have two nuclei and a large nebenkern, indicating failure of only one of the meiotic divisions. Occasionally spermatids are seen (<4% of cases) with three nuclei, which may be due to failure of cytokinesis in the first meiotic division, followed by budding off of only one daughter cell in the second meiotic division. Additionally, a significant proportion (19%) of spermatids have more than four nuclei, which may result from defects in the mitotic divisions preceding mitosis.
Giansanti