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4.3 Selective breeding and genetic modification

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Question 2
F

Bulldogs have been selectively bred for many generations to have a short, flat face.

Many bulldogs now have breathing problems and inherited disorders.

a.

Explain why selectively bred dogs are more likely to have inherited disorders.

[3]
b.

A new disease spreads among bulldogs.

Explain why this disease could affect a large proportion of the bulldog population.

[2]
c.

Suggest one way breeders could reduce the number of inherited disorders in bulldogs.

[1]
Markscheme

4.3 Selective breeding and genetic modification Questions

  1. GCSE
  2. /Biology
  3. /4.3 Selective breeding and genetic modification

44 exam-style questions on Edexcel GCSE Biology 4.3 Selective breeding and genetic modification, covering 4.3.1 Selective breeding and its impact, 4.3.2 Tissue culture, 4.3.3 Genetic engineering overview, 4.3.4 Main stages of genetic engineering, 4.3.5 Advantages and disadvantages of GM organisms, 4.3.6 Agricultural solutions for a growing population, and 4.3.7 Evaluating genetic engineering and breeding. Each one has a worked solution and a mark scheme showing where the marks go.

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