Edexcel A-Level Biology A 9BN0
Lifestyle, Health and Risk
Genes and Health
Voice of the Genome
Biodiversity and Natural Resources
On the Wild Side
Immunity, Infection and Forensics
Run for Your Life
Grey Matter
Genes and Health
The ethics of genetic screening
- 3 things to know
- Papers 1, 2 and 3
Overview
Recall questions on false positives and negatives, confidentiality, and the ethical arguments for and against screening.
What you need to know
Answer each one before you reveal it.
If a person tests positive as a carrier for a recessive genetic condition, why might their siblings want to know?
Why might genetic screening results have implications beyond the individual being tested?
Questions from this subtopic
Each one with the model answer underneath.
- 1
Why might parents face difficult decisions following prenatal genetic screening?
Model answer
If a genetic condition is detected, they may need to decide whether to continue or terminate the pregnancy
- 2
How can prenatal genetic screening benefit parents even if they choose to continue a pregnancy with an affected fetus?
Model answer
It allows them to prepare for the birth of a child with a genetic condition and arrange appropriate care in advance
- 3
What problems can arise from false positive results in genetic screening?
Model answer
They can cause unnecessary anxiety for individuals who do not actually have the condition or carry the allele
- 4
What is the danger of false negative results in genetic screening?
Model answer
They can provide false reassurance, leading individuals to believe they are not affected or carriers when they actually are
- 5
What concern exists regarding genetic screening information and employment or insurance?
Model answer
There are concerns about potential discrimination by employers or insurance companies based on an individual's genetic information
- 6
What ethical concern does PGD raise regarding embryo selection?
Model answer
There is concern about the potential for selecting embryos based on non-medical traits rather than just screening for genetic conditions
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