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fertilisation - Coggle Diagram

- - - - lay eggs and then develop over time
        
        birds and reptilles
    - - stays in the body until ready
        
        mammals and humans
    - - lay eggs that hatch inside the body
        
        boas and pit vipers
  - - - requires sperm and eggs (pva)
      - more male gametes are produced than female gamates
    - - occurs in females reproductive tract
      - fertiilise when gametes unite
    - - high chance as male gamete unite with female gamete in a confined space
    - - seasonal and less frequent
    - - it is common for parent to care for egg
- - - - low chance as male and female gametes are released in a large area
    - - more frequent as the success rate is lower
    - - male and female gametes produce large amounts
      - requires sperm and egg (ovs)