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Edexcel A-Level Biology AS 2.17 Genetic Screening Uses and Implications Questions

Identify screening targets and outcomes, connect carrier or test results to reproductive and diagnostic choices, evaluate effects on disorder frequency, ethics and personalised treatment.

Syllabus
First assessment 2019
Course
Biology YBI11
Level
AS

Exam points

  • Explain how carrier screening identifies couples or individuals at genetic risk.
  • Apply PGD, IVF, prenatal or diagnostic testing to reproductive and clinical decisions.
  • Explain how screening changes disorder frequency, diagnosis or personalised treatment while considering limitations.

Edexcel A-Level Biology AS 2.17 Genetic Screening Uses and Implications Questions question 1

[Maximum number: 3]

Cystic fibrosis is an inherited disorder.

The graph shows the number of babies with cystic fibrosis per 10000 births in one country, from 1990 to 2008.

Number of babies with cystic fibrosis per 10000 births

Figure for Question Edexcel A-Level Biology AS 2.17 Genetic Screening Uses and Implications Questions question 1 — Edexcel A-Level Biology AS

Explain how the identification of carriers, using genetic screening, could have contributed to the downward trend shown in this graph.

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