A DNA variant is found more frequently in people with a particular disease than in people without the disease.
How could this information be used in medicine?
To help identify people with an increased disease risk.
To replace the need for any further disease research.
To prove that the disease has no environmental causes.
To guarantee that every person with the variant becomes ill.
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.