Fig. 5.
Sperm is transferred by males lacking functional SP and stored for many days. Sections through female seminal receptacles 9 days after matings with an SP0, SP+/SPΔ control male (A) and an SP0/SPΔ male lacking SP (B), respectively. Whereas no sperm can be found in the section of the female mated with the control male, many sperm can be identified in the female mated with the male lacking SP. The DNA of the sperm heads was stained with 4′,6-diamidino-2-phenylindole. (Magnification: ×1,000; bar = 10 μm.) Arrowheads point to sperm nuclei. Females were collected from a virginizer stock (VC).