Thanks everyone!
No, I wasn't trolling. I myself felt pretty sure that it would be okay. (The worst part is knowing I spent so much time on that secondary and somehow let it slip by).
I did have some concern that it would significantly and negatively affect my chances though, because I gave a copy of my CV to one of my letter writers, who, at our next meeting, scolded me for writing "various phenotype" instead of "various phenotypes". It was kind of nasty: "How can you be accepted into a top MD/PhD program if you can't be detail oriented enough to proofread your own CV??? No program will want you if they can't take you seriously."
But it's also in that prof's nature to have super high expectations for his students cause he really cares about them.
Thanks for clearing this up for me, everyone!
The sarcasm was fine, and actually reassuring. 🙂