To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie 5. Related to Fig. 7B Movie of elongated mitochondria with aberrant constrictions from a P24 S8/Fis1 binucleated spermatid. Scale bars, 500 nm. Fis1 ablation in the male germline disrupts mitochondrial morphology and mitophagy, and arrests spermatid maturation Grigor Varuzhanyan, Mark S. Ladinsky, Shun-ichi Yamashita, Manabu Abe, Kenji Sakimura, Tomotake Kanki, and David C. Chan Development 2021. 148:None-None; doi: 10.1242/dev.199686 Download Original Video