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Reproduction - Coggle Diagram

- - - - There are 3 stages to oogenesis:
        
        multiplication phase
        
        growth phase
        
        maturation phase
      - Oogenesis is the process of the formation of a mature ovum from the oogonia in females.
    - - The process of spermatogensis is divided into 5 stages:
        
        spermatogonia ( Mitosis)
        
        primary spermatocytes ( Meiosis 1)
        
        secondary spermatocytes ( Meiosis 2)
        
        spermatids
        
        spermatoza ( Mature sperm cells)
      - Spermatogenesis is the production of sperm from the primordial germ cells.
- - - - Cortical reaction - process initiated during fertilization to prevent polyspermy (the fusion of multiple sperm with one egg)
        
        After fertilization
        
        Day 1: Zygote
        
        Day 2: 4 cell embryo
        
        Day 3: 8 cell embryo
        
        Day 4: Morula
        
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