Light microscopy of meiotic zoosporogenesis and mitotic gametogenesis in Ulva mutabilis føyn

ABSTRACT The light-microscopical cytology of synchronized meiotic zoosporogenesis and mitotic gametogenesis in the sea-lettuce Ulva mutabilis Føyn, is described. The similarity in time course and morphological events of the 2 processes is stressed and discussed with particular reference to the use of Ulva in the biochemical study of cellular preparation for meiosis and mitosis.