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3.4 Variation and the Human Genome Project

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Question 5
F

Identical twins have the same inherited alleles. One twin regularly trains with weights and develops larger arm muscles than the other.

Which explanation is supported by this information?

[1]
A

Muscle size is determined by inherited alleles only.

B

Muscle size can be influenced by environmental factors.

C

Weight training produces different inherited alleles in twins.

D

Weight training removes genetic influences on muscle size.

Markscheme

3.4 Variation and the Human Genome Project Questions

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

40 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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