Sperm DNA movement is kinesin-1 dependent. (A) Representative images of fixed meiotic embryos. Red vertical arrows denote sperm DNA; green horizontal arrows denote the meiotic spindle. Bars, 10 µm. (B) Diagram depicting absolute position. The end of the embryo with the sperm was specified as zero. (C) Quantification of sperm and spindle positions along the long axis of the embryo in percent embryo length. (D) Quantification of the sperm-to-cortex distance in micrometers. (E) Quantification of the distance between the sperm and the meiotic spindle reported as percent embryo length. (D and E) Numbers are shown in Table S1. *, P < 0.05; ***, P < 0.001. Error bars denote standard error of the mean.