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Biological approach

Biological approach

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Question 22

In a study of vision health, researchers examined 120 pairs of identical twins. They recorded whether both twins in each pair had the same myopia (nearsightedness) category or different categories.

Table 1: Concordance of myopia categories in 120 identical twin pairs

Twin pairs with the same myopia categoryTwin pairs with different myopia categories
5466

Use your knowledge of genotype and phenotype to explain the data in Table 1.

[4]
Markscheme

Biological approach Questions

  1. A Level
  2. /Psychology
  3. /Biological approach

48 exam-style questions on AQA A Level Psychology Biological approach. Each one has a worked solution and a mark scheme showing where the marks go.

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