|Funny picture, eh? My daughter is an awesome example of the YA audience.|
So you're writing fiction ... young-adult-paranormal-romance fiction (for a specific example) ... and ... then there's a question:
Do you think young adult is a genre?
It is an audience.
Genre is a category like: romance, paranormal, fantasy, science fiction, suspense, and so on.
So if you are pitching your paranormal romance to an agent or editor, and they ask, "In which genre do you write?" If you answer, "I write in the young adult genre." ... eyebrows could be raised, and they could doubt your knowledge of the craft.
Likewise, if you're writing a query letter, make sure you get the terminology correct. You're writing a paranormal romance targeted at the young adult audience. ... NOT: You're writing in the young adult genre with paranormal romance.
Young adult fiction has gained so much popularity, it's easy to think of it as its own category; its own genre; but yet, it is still an audience not a category.
So ... you're writing fiction.
In what genre are you writing?