Understanding DNA's structure — famously credited to Watson and Crick, though critically built on Rosalind Franklin's X-ray diffraction images, which provided essential evidence for the double helix structure — has enabled powerful gene technologies. These include genetic engineering (directly modifying an organism's DNA), gene therapy (treating disease by correcting or replacing faulty genes), and genetic testing (analysing DNA to detect specific genes or mutations). Genetic testing raises real ethical questions: it can be used for genetic counselling and identifying carriers of inherited conditions, but also raises concerns around privacy, potential discrimination based on genetic information, and difficult decisions around embryo selection.
Example
A couple with a family history of a serious inherited genetic condition might use genetic testing during genetic counselling to understand their own risk of carrying the gene and the chance of passing it to their children — powerful information that supports informed decision-making, but also raises questions about how that same genetic information could be used or accessed by others, like insurers or employers.
Key terms
Genetic engineering:
Directly modifying an organism's DNA.
Genetic testing:
Analysing DNA to detect specific genes, mutations or inherited conditions.
Questions
1. Rosalind Franklin's work involved:
X-ray diffraction images critical to discovering DNA's structure
No connection to DNA research at all
Only work unrelated to genetics
Research conducted after DNA's structure was already fully known
2. Genetic engineering involves:
Directly modifying an organism's DNA
Only observing DNA with no modification
A process unrelated to DNA
Only occurring naturally with no human involvement
3. Gene therapy aims to:
Treat disease by correcting or replacing faulty genes
Have no medical application at all
Only be used on plants, never humans
Cause new genetic diseases intentionally
4. Genetic testing analyses DNA to:
Detect specific genes, mutations or inherited conditions
Change a person's personality
Determine someone's favourite food
Have no useful medical or scientific purpose
5. Genetic counselling can help people understand:
Their risk of carrying or passing on a genetic condition
Nothing related to genetics at all
Only their physical fitness level
Only their diet preferences
6. Ethical concerns around genetic testing include:
Privacy and potential discrimination
No ethical concerns exist at all
Only concerns about cost, with nothing else relevant
Concerns unrelated to any real-world use
7. The discovery of DNA's double helix structure is credited to:
Watson and Crick, building on Franklin's critical evidence
A single scientist working in complete isolation
No specific scientists at all
Only Watson, with no other contributors
8. Why is Rosalind Franklin's contribution to discovering DNA's structure considered historically significant, beyond just the scientific discovery itself?
Her X-ray diffraction images provided essential evidence, yet her contribution was historically under-recognised compared to Watson and Crick, raising questions about proper scientific credit
Franklin's contribution has no historical significance beyond the discovery itself
Franklin's work was completely unrelated to and separate from Watson and Crick's findings
Watson and Crick made their discovery with absolutely no use of any external evidence or data
9. Why might genetic testing before having children (like carrier screening) provide valuable information even for parents with no known family history of a genetic condition?
Some genetic conditions can be carried without any family history or visible symptoms, so testing can reveal a risk that wouldn't otherwise be known
Genetic testing only ever provides useful information for people with an already-known family history
Carrier screening is only relevant for genetic conditions that already show visible symptoms
A lack of known family history always guarantees there is no genetic risk to test for
10. Why might the ability to identify a person's genetic predispositions raise concerns about how insurance companies or employers could potentially use that information?
Genetic information could potentially be used to discriminate against someone based on a predicted future health risk, rather than their current actual health
Insurance companies and employers have no genuine interest in accessing or using anyone's genetic information
Using genetic predisposition information for insurance or employment decisions raises no ethical concerns whatsoever
Genetic predisposition information has no real-world application outside of a medical or research setting
11. Why might genetic engineering used to treat a serious inherited disease raise different ethical considerations than genetic engineering used for non-medical trait selection?
Treating a serious disease addresses a clear medical need, while non-medical trait selection raises broader questions about the purpose and limits of modifying human genetics
These two applications of genetic engineering are always considered ethically identical with no meaningful distinction
Medical and non-medical genetic engineering never actually raise any different ethical questions
There is no meaningful ethical difference between treating disease and altering non-medical traits
12. Why might genetic counselling typically involve a trained professional discussing test results with a person, rather than the person simply receiving a report on their own?
Genetic results can be complex and emotionally significant, so professional guidance helps a person understand the implications and make informed decisions
Genetic test results are always simple enough that no professional guidance or explanation is ever needed
Professional genetic counselling provides no additional value beyond a person reading a report independently
The emotional or practical implications of genetic test results are never a relevant consideration
13. Why might a genetic test result showing a person carries a gene associated with a condition NOT necessarily mean they will definitely develop that condition?
Many genetic conditions depend on multiple genes, environmental factors, or incomplete penetrance, so carrying a gene doesn't always guarantee the condition will actually develop
Carrying any gene associated with a condition always guarantees that the condition will definitely develop
Genetic test results always provide completely certain predictions about a person's future health with no exceptions
Environmental and other non-genetic factors never have any influence on whether a genetic condition actually develops
14. Why might rapid advances in gene technology (enabled partly by faster computing power) create new ethical questions faster than laws and regulations can address them?
Technology can develop and become accessible more quickly than the slower, more deliberative process of updating laws and ethical guidelines to address new capabilities
Laws and regulations always keep pace exactly with the speed of new technological developments
The speed of technological advancement has no bearing on the pace of ethical or legal discussion
Gene technology has developed at exactly the same pace as legal and regulatory frameworks throughout history
15. Why might the decision to use genetic testing for embryo selection be considered one of the most ethically complex applications of gene technology?
It raises difficult questions about what characteristics are acceptable to select for, and touches on deeply held personal, cultural and philosophical views about human life and diversity
Embryo selection using genetic testing raises no ethical complexity or difficult questions whatsoever
This application of gene technology is considered ethically identical and equally straightforward as any other genetic test
Personal, cultural and philosophical views have no real connection to how embryo selection is ethically evaluated
16. Why might genetic privacy be considered a particularly complex issue, given that genetic information can reveal things about a person's biological relatives, not just themselves?
A single person's genetic test can reveal information relevant to their relatives too, meaning genetic privacy decisions can have implications beyond just the individual being tested
Genetic information is always relevant only to the single individual being tested, with no connection to relatives
Genetic privacy concerns are identical to standard, non-genetic types of personal privacy with no added complexity
A person's genetic test results have no possible connection to information about their biological relatives
17. Why might society need to establish clear ethical guidelines specifically for gene technologies, even though similar debates have occurred around other new medical technologies in the past?
Genetic information is uniquely permanent, hereditary and deeply personal, which can raise distinct ethical stakes compared to some other medical technologies
Gene technologies raise exactly identical ethical considerations to every other type of medical technology, with nothing genuinely distinct
No new or specific ethical guidelines are ever needed for genetic technologies given past experience with other medical technologies
The permanence and hereditary nature of genetic information has no bearing on the ethical considerations involved
18. Why might historically crediting scientific discoveries to a small number of individuals (like Watson and Crick) risk obscuring the broader collaborative and evidence-based nature of real scientific progress?
Focusing on a few credited names can understate how discoveries often depend on the contributions, evidence and work of multiple people, some of whom may be overlooked
Crediting scientific discoveries to specific individuals always accurately and completely reflects how that discovery actually occurred
Scientific discoveries are always made by a single, isolated individual with no reliance on anyone else's work or evidence
How credit for a scientific discovery is historically assigned has no bearing on public understanding of how science actually progresses
19. Why might legal protections against genetic discrimination (preventing insurers or employers from using genetic test results in certain decisions) be considered necessary as genetic testing becomes more widespread and accessible?
Without such protections, the growing availability and detail of genetic information could increasingly be used in ways that unfairly disadvantage people based on predicted, rather than actual, health outcomes
Legal protections against genetic discrimination serve no real purpose as genetic testing becomes more widespread
Genetic information can never realistically be used in any way that could disadvantage an individual
The accessibility of genetic testing has no bearing on the need for legal protections around its use
20. Why might gene therapy that alters only a patient's own body cells (not reproductive cells) raise different ethical considerations than gene therapy that could be inherited by future generations?
Changes limited to an individual's own cells affect only that person, while heritable changes could affect future generations who cannot consent to the alteration
These two types of gene therapy always raise exactly identical ethical considerations with no meaningful distinction
Whether a genetic change can be inherited by future generations has no bearing on how it should be ethically evaluated
Gene therapy of any kind can never actually be inherited by future generations under any circumstances
21. Understanding gene technology and the ethics of genetic testing mainly helps you to:
Evaluate the scientific capabilities and ethical implications of modern genetic technologies
Assume genetic testing raises no meaningful ethical questions or considerations
Ignore the historical context and contributions behind major genetic discoveries
Treat genetic privacy as identical to any other, non-genetic form of personal privacy
Answer key (parent copy)
1. X-ray diffraction images critical to discovering DNA's structure
2. Directly modifying an organism's DNA
3. Treat disease by correcting or replacing faulty genes
4. Detect specific genes, mutations or inherited conditions
5. Their risk of carrying or passing on a genetic condition
6. Privacy and potential discrimination
7. Watson and Crick, building on Franklin's critical evidence
8. Her X-ray diffraction images provided essential evidence, yet her contribution was historically under-recognised compared to Watson and Crick, raising questions about proper scientific credit
9. Some genetic conditions can be carried without any family history or visible symptoms, so testing can reveal a risk that wouldn't otherwise be known
10. Genetic information could potentially be used to discriminate against someone based on a predicted future health risk, rather than their current actual health
11. Treating a serious disease addresses a clear medical need, while non-medical trait selection raises broader questions about the purpose and limits of modifying human genetics
12. Genetic results can be complex and emotionally significant, so professional guidance helps a person understand the implications and make informed decisions
13. Many genetic conditions depend on multiple genes, environmental factors, or incomplete penetrance, so carrying a gene doesn't always guarantee the condition will actually develop
14. Technology can develop and become accessible more quickly than the slower, more deliberative process of updating laws and ethical guidelines to address new capabilities
15. It raises difficult questions about what characteristics are acceptable to select for, and touches on deeply held personal, cultural and philosophical views about human life and diversity
16. A single person's genetic test can reveal information relevant to their relatives too, meaning genetic privacy decisions can have implications beyond just the individual being tested
17. Genetic information is uniquely permanent, hereditary and deeply personal, which can raise distinct ethical stakes compared to some other medical technologies
18. Focusing on a few credited names can understate how discoveries often depend on the contributions, evidence and work of multiple people, some of whom may be overlooked
19. Without such protections, the growing availability and detail of genetic information could increasingly be used in ways that unfairly disadvantage people based on predicted, rather than actual, health outcomes
20. Changes limited to an individual's own cells affect only that person, while heritable changes could affect future generations who cannot consent to the alteration
21. Evaluate the scientific capabilities and ethical implications of modern genetic technologies