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4.3 Selective breeding and genetic modification

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Question 32

A duck breeder compares breeding records before choosing parents for the next generation. All the female ducks in the table have high egg production.

In the table, a carrier has one copy of an allele for a harmful recessive condition. A non-carrier does not have this allele.

breeding pairrelationship between the ducksfemale duckmale duck
Pclosely relatedcarriercarrier
Qunrelatedcarriercarrier
Runrelatedcarriernon-carrier

Explain which breeding pair the breeder should use to reduce the risk of the harmful condition and help the duck population respond to a new disease.

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Markscheme

4.3 Selective breeding and genetic modification Questions

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

100 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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