What is a potential concern regarding the use of human embryos in research?

The use of human embryos in research raises ethical concerns primarily because they are considered potential human lives. This perspective stems from the belief that embryos have the potential to develop into fully formed human beings, which leads to debates about their moral status and rights. Many individuals and groups argue that embryos, even at early stages, should be afforded certain protections due to their potentiality.

This concern prompts discussions about the moral implications of using embryos for research purposes, such as stem cell research, where they might be destroyed in the process. The ethical dilemma centers on weighing scientific advancement against the value placed on human life, leading to deep philosophical questions about when life begins and what rights an embryo may possess.

In contrast, the other options do not reflect the core ethical debate surrounding embryonic research. For instance, the speed of embryo development is a technical detail that doesn't inherently raise ethical issues. The notion that embryos lack genetic material is inaccurate, as they contain genetic information from both parents. Lastly, the potential for improper disposal relates to practical and procedural aspects rather than ethical considerations regarding the embryos themselves.