However, some descriptors of cats are not actual breeds. Both tortoiseshell and calico fall into this category. They are not ...

Fortunately, mom and fur mom @brittanyy192 knew exactly what was going on when the cat at her local vet clinic fell in love ...

A prime example of X inactivation is in the coat-color patterning of tortoiseshell or calico cats (Figure 1). In cats, the fur pigmentation gene is X-linked, and depending on which copy of the X ...

This is why most calico and tortoiseshell cats, which have a mix of black and brown fur, are female. In somatic cells, only one of the two X chromosomes is active, and as a result, the black and ...

And why not? After all, the younger cat was raised by her mama, and learned all her feline habits from the same place. View the original article to see embedded media. The calico cat in this video ...