Dangers of Selective Breeding

Biology: AQA GCSE Higher, topic 6.2.7

Dangers of Selective Breeding

Selective breeding can create some problems:

Inbreeding

Inbreeding

  • Selective breeding can lead to inbreeding. Here, some breeds become particularly susceptible to disease or inherited defects.
  • For example, French bulldogs have been selectively bred to have flat faces, but that causes them breathing problems.
Reduced variation

Reduced variation

  • Selective breeding can reduce variation (differences in characteristics) within a population, making it harder for a species to adapt to environmental change.

Test yourself on Dangers of Selective Breeding

  • French bulldogs have been selectively bred to have flat faces. What problem has this caused as a result of inbreeding?

  • A breed of dog has been developed by breeding together closely related dogs for many generations. Which problem caused by selective breeding does this describe?

  • An example of a problem caused by selective breeding is

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