Allahabad University Studies

It is not the fact of the position of the acrosome in the sperm which is the criterion for its identifiction but it is the origin. [...] In Tubifex therefore nearly whole of the Golgi apparatus of the spermatid surrounding the head of the ripe spermatozoon corresponds in a broad sense to the acrosome of the above-mentioned animals. [...] The nucleus in each cell of the outer layer moves inwards towards the centre of the cluster and undegoes mitotic division while the cells in the central part remain in the resting stage. [...] After the peripheral cells have divided the central cells degenerate and become transformed into the sperm blastophore." The daughter cells produced by several divisions of the spermatocytes of the peripheral layer are half the size of the mother cells and become the spermatids. [...] The centriole lies at the distal end in the centre of the archoplasm at the base of the axial filament.