Kingdom of Cages by Sarah Zettel

As humanity faces extinction, Chena and Teal Trust are chosen to immigrate as part of the “Eden Project” devised by the brilliant ecologists of Pandora, a planet closely matching Earth. Once they arrive, the Trusts quickly learn the scientists don’t want new blood–only raw DNA. When Chena’s mother is killed, Chena and Teal vow to fight the system that killed her.