Oogenesis - Egg Development

Oogenesis - Egg Development

1. ·

   • Primordial germ cell
     • Oogonium
       • Primary Oocyte
         • 2N
         • Secondary Oocyte
           • Ovulation: Sperm Entry
             • Fertilized Egg
               • N
             • N
               • Second Polar Body
           • N
           • Meiosis II - Metaphase
             • Meiosis II Completed
               • Unequal cytokinesis
             • • Puberty
           • Mature follicle
             • Becomes corpus luteum and degenerates
         • - in Follicle
           • =>
       • 2N
     • >
       • >
   • N
     • First Polar Body
   • In the Embryo
   • Mitotic divisions
   • Meiosis I - Prophase
     • Meiosis I to Meiosis II

2. Each diploid stem cell (2N) produces ONE haploid egg cell (1N)