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Life past and present, ., ., . - Coggle Diagram

- - - - Make conclusions.
- - - - Egg (ova)
        
        23 chromosomes
      - Sperm
        
        23 chromosomes
      - meiosis
        
        haploid (1/2)
        
        2 cell divisions
        
        Produce 4 daughter cells.
  - - - Mutations
        
        Change in DNA sequence
      - Outcome: beneficial, neutral, harmful
      - mutagens- radiation--> melanoma
    - - A- T
      - C- G
    - - segment of DNA
      - Codes for protein
      - amino acids are building blocks
      - Genotype- genetic combination
      - Phenotype- physical appearance