Year 11 - Science
Genetic testing for healthcare
Gene technology
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This pupil-friendly study guide includes a unit summary, clear notes, common mistakes, and quick questions with answers.
Unit Summary
This unit covers the human genome's importance and genetic engineering, outlining steps, benefits, and risks. It explores gene technology in agriculture and medicine, focusing on ethical considerations, and societal impacts, and evaluating scientific limitations and risks.
Lesson Summary
You will learn to explain how genetic testing can be used to test for alleles associated with disease, and how this information can be used.
Key Notes
- Some alleles affect health (e.g. increase the risk of non-communicable diseases or adverse reactions to treatments).
- Genetic testing and genome sequencing can identify the presence of these alleles in a person's genome.
- Healthcare can be personalised and lifestyle changes can be implemented to decrease risk and improve health.
- Genetic test data could be misused, and its use must be regulated.
Vocabulary To Learn
- risk: the chance that an outcome (usually a negative one) will occur
- allele: different version of a gene, which can produce a different characteristic in the organism's phenotype
- genetic testing: processes that look for the presence of particular alleles in the DNA of an organism's genome
- genome sequencing: the process of reading the sequence of nucleotide bases (A, T, C and G) in the DNA of the genome
- personalised medicine: healthcare tailored to a person's individual risk of ill health
Common Mistakes To Avoid
- Thinking that an allele that increases the risk of a disease makes it certain to happen.
3 Quick Questions (With Answers)
1. Explain the scientific idea in this lesson using two key points.
Some alleles affect health (e.g. increase the risk of non-communicable diseases or adverse reactions to treatments). Genetic testing and genome sequencing can identify the presence of these alleles in a person's genome.
2. Define this scientific word and use it in context. 'risk'
the chance that an outcome (usually a negative one) will occur. Include the word in a full scientific explanation, not as a single label.
3. Correct this common scientific misunderstanding.
Mistake: Thinking that an allele that increases the risk of a disease makes it certain to happen. Correction: The lesson explores the idea the alleles can be risk factors for disease, and that in many cases other factors also affect the risk.
More Lessons In This Unit
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