A breed of chicken grows rapidly but often develops painful leg problems.
Which information is most directly relevant to an ethical decision about continuing this breeding programme?
The number and mass of the chickens sold.
The size and location of the farms involved.
The cost and quantity of the feed consumed.
The frequency and severity of the leg problems.
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.