AQA AS Biology Unit 2 Genetic Variation in Bacteria

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Genetic variation- Bacteria
- Conjugation
  - transfers DNA
  - Horizontal vs Vertical
    - horizontal- across species
    - vertical- from generation to the next
- Mutation- changing a quantity or structure of DNA
- Mutations
  - changes in DNA resulting in different characteristics
    - E.G. changing, adding or replicating DNA bases.
    - change base seq. may = different AA's
      - Can change protein to be good/bad.
Adaptation- increases long term reproductive success of a species, helping members to survive long enough to breed
Cell 1 produces thin projection meeting cell 2
- Conjugation tube
- donor replicates a DNA plasmid
  - Plasmid broken to linear + passes along tube
    - Brief contact of 1+2, only portion DNA transferred
      - Recipient acquires new characteristics
donor replicates a DNA plasmid
- Plasmid broken to linear + passes along tube
  - Brief contact of 1+2, only portion DNA transferred
    - Recipient acquires new characteristics
Horizontal vs Vertical
- horizontal- across species
- vertical- from generation to the next

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