Final answer:
The genre of 'Mockingjay' is science fiction, specifically dystopian science fiction set in a post-apocalyptic world.
Step-by-step explanation:
The genre of 'Mockingjay' is Science fiction. Science fiction books and stories often revolve around science and technology, apocalyptic and post-apocalyptic worlds, dystopian societies, time-travel, and space exploration and first contact.
'Mockingjay' is part of 'The Hunger Games' trilogy by Suzanne Collins, which is set in a dystopian society and explores themes of rebellion and survival.