Poleward Movement of “Markers” Existing in Mitotic Spindles of Grasshopper Spermatocytes

Abstract

The movement of granules or materials composing the spindles of primary spermatocytes of grasshoppers [Trilophidia annulata and Mongolotettix japonicus] was cinematographically recorded and photokymographically analyzed by tracing. These markers between chromosomes and spindle poles moved poleward during metaphase and anaphase at about the velocity of chromosomes during anaphase.