Final answer:
The use of embryos for stem cell research is not a primary concern when dealing with ethical issues related to modern day biotechnology.
Step-by-step explanation:
When dealing with ethical issues related to modern day biotechnology, the use of embryos for stem cell research is not a primary concern. The other options mentioned, such as protecting human subjects during clinical trials, using tissues that would have been discarded after a surgical procedure, and informing patients of the possibility of the onset of genetic diseases in one's future, are all important considerations in biotechnology ethics. However, the use of embryos for stem cell research raises complex ethical questions and is subject to debate.