<P> Meiosis I of ootidogenesis begins during embryonic development , but halts in the diplotene stage of prophase I until puberty . The mouse oocyte in the dictyate ( prolonged diplotene ) stage actively repairs DNA damage , whereas DNA repair is not detectable in the pre-dictyate ( leptotene , zygotene and pachytene ) stages of meiosis . For those primary oocytes that continue to develop in each menstrual cycle , however , synapsis occurs and tetrads form , enabling chromosomal crossover to occur . As a result of meiosis I , the primary oocyte has now developed into the secondary oocyte and the first polar body . </P>
<P> Meiosis I of ootidogenesis begins during embryonic development , but halts in the diplotene stage of prophase I until puberty . The mouse oocyte in the dictyate ( prolonged diplotene ) stage actively repairs DNA damage , whereas DNA repair is not detectable in the pre-dictyate ( leptotene , zygotene and pachytene ) stages of meiosis . For those primary oocytes that continue to develop in each menstrual cycle , however , synapsis occurs and tetrads form , enabling chromosomal crossover to occur . As a result of meiosis I , the primary oocyte has now developed into the secondary oocyte and the first polar body . </P>
the products of meiosis i in oogenesis are the
the products of meiosis i in oogenesis are the
secondary oocyte first polar body
secondary oocyte first polar body