Continuity mistake: In season 1 they are tracking leopards but when they take a cub for the cure it's clearly an African serval kitten.
This Is What It Sounds Like - S1-E6
Continuity mistake: The bear in the kitchen knocks over the fridge. When we cut back to the bear in the kitchen later, the fridge is standing back up again. (00:27:09)
Continuity mistake: Chloe had a glass of wine though it is not on table in front of her or in her hand. Next shot showing the same table area, there's a glass of wine on the table. (00:20:30)
Continuity mistake: After Jaime steps on the nail then takes off her shoe and sock, her big toe is black. She stands up in frustration and the long shot shows she's still got her boot on.
Answer: In the episode "Blame It on Leo", Leo Butler, who use to work for Reiden, tells the group about the "mother cell." He explains it's Reiden's molecule vector. So it's something Reiden created. In real life science, vector cells are used to introduce DNA sequences from one organism to another. There are a variety of ways for this to occur, however, in the show not much explanation is given about how Reiden's mother cell works (and tends to bend how it works to the will of the plot).
Bishop73