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3.4 Variation and the Human Genome Project

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Question 5

Scientists recorded the effects of 1200 mutations in algal cells.

Effect on phenotypeNumber of mutations
No effect1086
Small effect96
Significant effectnot recorded

Calculate the percentage of the mutations that changed the phenotype which had a significant effect.

Give your answer to one decimal place.

[3]
Markscheme

3.4 Variation and the Human Genome Project Questions

  1. GCSE
  2. /Biology
  3. /3.4 Variation and the Human Genome Project

96 exam-style questions on Edexcel GCSE Biology 3.4 Variation and the Human Genome Project, covering 3.4.1 Causes of variation, 3.4.2 Outcomes of the Human Genome Project, 3.4.3 Genetic variation within a population, and 3.4.4 Effects of genetic mutations on phenotype. Each one has a worked solution and a mark scheme showing where the marks go.

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