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3.4 Variation and the Human Genome Project

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Question 4

At a genetic counselling service, relatives of people with an inherited disorder are tested for allele S, which is associated with the disorder.

Test resultDisorder presentDisorder absent
Allele S present5139
Allele S absent1426

What percentage of relatives without allele S do not have the disorder?

[1]
A

40%40\%40%

B

35%35\%35%

C

20%20\%20%

D

65%65\%65%

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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