Comprehension Passage
The field of genetic engineering has seen remarkable advancements in recent decades, with the development of technologies like CRISPR allowing scientists to edit genes with precision. While the potential for genetic engineering in medicine is immense, including the possibility of curing genetic diseases, it has also raised ethical concerns. One major debate revolves around the use of genetic engineering in human embryos. Proponents argue that editing genes to eliminate hereditary diseases could improve human health and longevity. However, critics warn of the risks associated with altering human DNA, including unintended consequences and the possibility of creating 'designer babies,' where genetic traits such as intelligence or physical appearance are selected based on personal preference. The long-term effects of these genetic modifications on future generations are unknown, leading to calls for stricter regulation and oversight in this area. The promise of genetic engineering is undeniable, but its ethical implications continue to spark heated debates worldwide.
Which of the following weakens the argument in favor of widespread genetic engineering in human embryos?
1
The possibility of curing hereditary diseases.
2
The use of CRISPR to edit genes with precision.
3
The unknown long-term effects on future generations.
4
The potential to reduce healthcare costs.