Ethical Issues (Leaving Cert Biology): Revision Notes

Ethical Issues

The rapid advancement of genetic technologies has brought tremendous benefits to medicine, agriculture, and research. However, these powerful tools also raise important ethical questions that society must carefully consider. Ethics concerns whether our conduct is right or wrong, and in genetic engineering, we must balance the potential benefits against the risks and moral concerns.

Access to genetic information

One of the most pressing ethical issues involves who should have access to genetic data and how it can be used. This raises several important concerns about fairness and discrimination in our society.

The question of access extends across multiple areas including agriculture, healthcare, industry, reproduction, and forensics. A particularly worrying issue is whether employers or insurance companies should be allowed to access a person's genetic information. If they gain this access, they might unfairly deny someone employment or insurance coverage based on their genetic predisposition to certain conditions.

This creates a dilemma between the potential benefits of genetic information and the need to protect individuals from discrimination. Society must establish clear guidelines about who can access genetic data and how it can be used to ensure fairness and prevent genetic discrimination.

Concerns about genetic modification

Genetic modification raises several fundamental ethical questions that challenge our understanding of what is natural and acceptable in science.

Safety represents a primary concern - we must ask whether genetic modification is truly safe for humans, animals, and the environment. The long-term effects of genetically modified organisms (GMOs) are still being studied, and some worry about unintended consequences.

Another significant debate centres around whether genetic modification involves "playing God" by altering the natural genetic makeup of organisms. This raises philosophical questions about the limits of human intervention in natural processes and whether we have the right to make such changes.

The question of whether GMOs provide a good and safe food source remains contentious. While supporters argue they can help address hunger and improve nutrition, critics worry about potential health risks and environmental impacts.

Some people argue that because genetic modification is not natural, it should not be allowed at all. This perspective emphasises the importance of maintaining natural genetic diversity and avoiding artificial alterations to life.

DNA testing ethical considerations

DNA testing offers powerful diagnostic capabilities but raises important ethical concerns about privacy, consent, and communication that must be carefully addressed.

DNA testing can identify genetic mutations and determine whether someone has or is at risk of developing genetic conditions. It can also reveal the likelihood of passing genetic disorders to children. While this information can be valuable for medical decision-making, it also creates ethical challenges.

Informed consent is crucial - people must fully understand the implications of genetic testing before agreeing to it. This means explaining not just what the test can reveal, but also how the results might affect their life, family relationships, and future choices.

Privacy and security of genetic information represent major concerns. Test results must be stored securely and protected from unauthorised access. There are serious questions about who should have access to these results and under what circumstances they can be shared.

Questions also arise about family members' right to know results that might affect them, balancing individual privacy with family health interests.

Stem cell research and applications

Stem cells offer remarkable potential for treating diseases but raise complex ethical questions about the source of these cells and how they should be used.

Stem cells are undifferentiated cells capable of developing into many different tissue types, making them valuable for medical research and treatment. They can be obtained from adult tissues or embryonic sources, each raising different ethical considerations.

For therapeutic purposes, stem cells can potentially treat and heal diseases by replacing damaged cells. Bone marrow transplants already use stem cells to treat cancers and blood-related diseases. Researchers are investigating how stem cells might treat conditions like type 1 diabetes, Parkinson's disease, heart failure, and arthritis.

The use of embryonic stem cells raises particular ethical concerns because it involves the destruction of human embryos. Some people believe this is morally wrong, while others argue the potential benefits justify this research.

Cloning applications involve removing the nucleus from a patient's cell and inserting it into an egg whose nucleus has been removed. The resulting cells are genetically identical to the donor and can be encouraged to develop into specific tissues or organs. While this offers therapeutic possibilities, it also raises concerns about the boundaries between therapy and reproduction.

The creation of Dolly the sheep demonstrated that cloning can produce entire organisms, raising fears about human reproductive cloning and the ethical implications of creating genetic duplicates.