Primitive Biology (Earth-1600)

Primitives, despite their animal nature, feature many distinctive aspects in biology, physiology and genetics from their evolutionary predecessors.

Mutation
Primitives possess the Primitive Gene, which is positioned on the 23rd chromosome (sexual chromosome). This gene leads to an exotic protein. This protein produces chemical signals inducing mutations on other genes, ending up with mutated organisms.

Activation
The mutation occurs while the organism is in its mother's womb before being given birth.

Breeding
Primitives can only breed with members of the same animal species. As such, it is common to have offspring that are very similar to their parents, only with primitive-enhanced traits.