The stunning, patchy fur of tortoiseshell cats reveals a fascinating genetic story. Female cats have two X chromosomes, which means they can carry genes for both black and orange fur colors.

Two-colored, bi-color cats possess two-colored fur, often white and some other simple ... method of genetics—X-inactivation—as calicos. Tortie coats range from large, solid blotches to pale ...

HE is on a mission to help our pets  . . . and is here to answer YOUR questions. Sean, who is the head vet at tailored pet ...

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 ...

Like humans, cats with light or white coats are at an increased risk of developing sunburn-especially on their ears, eyelids, and nose. Unlike allegedly unlucky black cats, all-white cats symbolize ...

Males normally carry only one X chromosome, so males can be black or orange, or other colour variations, but cannot have both black and orange hair colours ... calico or tortoiseshell cats are ...