The series is based on the popular New York Times bestselling book series collectively known as The Expanse,  written by Daniel Abraham and Ty Franck (under the pen name James S. A. Corey). Abraham and Franck will be show producers.
A tortoiseshell cat is a coat color where the cat is a molted brown cat with black, reddish, or orange patches. They can also have white paws. Tortoiseshell cats have unique genetics. The vast majority of tortoiseshell cats are female, because two X chromosomes are required to produce black, gold and orange coloring.
The term âtortoiseshellâ is used for cats with brindled coats that have few or no white markings. Cats of this coloring with larger areas of white fur are called calicos. Sometimes, these colors present in lighter versions such as lilac or cream. Torties with this lighter coloring are called dilute torties. Occasionally, the typical tortoiseshell colors are also seen in a tabby (striped) pattern, and these cats are sometimes referred to as âtorbies.â. Tortoiseshell cats are almost exclusively female. Tortoiseshell and calico coats are the result of the interaction between genetic and developmental factors.