selective breeding

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  • Created by: katherine
  • Created on: 29-01-13 15:45
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  • Selective Breeding
    • Living things in a species have variation
    • Individuals with  desired characteristics can be selected for the next generation
    • Unwanted alleles     can be bred out of the population
    • For and Against
      • reduced genetic diversity
      • can cause health problems for animals
      • Increased genetic diseases
      • increased        susceptibility to new diseases due to lack of alleales
      • higher yields of animals or plants
      • can be bred to increased tolerance of of bad conditions
      • species with increased        resistance      to disease

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