The following text is about biotechnology.
CRISPR gene editing has revolutionized biology by making precise genetic modifications faster, cheaper, and more accurate than previous methods. Scientists can now edit genes to study their functions, develop disease-resistant crops, and explore treatments for genetic diseases. The first CRISPR-based therapy was recently approved for treating sickle cell disease. However, the technology also raises ethical concerns, particularly regarding heritable modifications that would affect future generations. Most countries prohibit such germline editing pending broader societal debate.
What is the main point about CRISPR according to the text?
CRISPR has only theoretical applications
CRISPR offers powerful capabilities but raises ethical questions about certain uses
All applications of CRISPR have been banned worldwide
CRISPR is more expensive than previous methods
Correct Answer: B
Choice B is the correct answer. The text describes capabilities (disease therapies, crop development) AND ethical concerns (heritable modifications), noting prohibitions on some uses.
- Evidence: Therapeutic approval plus ethical concerns about germline editing.
- Reasoning: Power and responsibility both highlighted.
- Conclusion: Powerful technology with ethical considerations.
Choice A is incorrect because a therapy was "recently approved." Choice C is incorrect because only germline editing is widely prohibited. Choice D is incorrect because CRISPR is "cheaper" than previous methods.