Nucleotide substitution: G1985A. Nucleotide substitution: G2489A. Amino acid replacement: D667N. Amino acid replacement: D815N.
G10264877A
G1985A
D647N | can-PA
D667N
G10264373A
G2489A
D815N | can-PA
D815N
Early stages of spermatogenesis up through mature primary spermatocytes are present and normal. Postmeiotic stages are completely absent. Mutant testes have an abundance of mature primary spermatocytes with large, round nuclei and prominent nucleoli. Spermatocytes arrest in the G2/M transition of meiosis I with partial chromosome condensation.