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

They need a name as beautiful and unique as their distinct coats. Tortoiseshell cats get their name from the mottled color ...

Now, two studies have finally identified the genetic key to this mystery, solving a puzzle first theorized in 1912. The studies, conducted independently by Japanese and American research teams, have ...

Two new, preliminary papers identify a gene related to a cat’s coloration. The work also explains why tortoiseshell and calico cats tend to be females Gayoung Lee The genetic basis for orange ...

But female kittens can have a calico's patchwork of black, orange and white, or a tortoiseshell's marbling of orange scattered through black fur. A tortoiseshell cat. (Yosei G/Unsplash ...

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 ...

Two separate research teams found that the characteristic ginger, calico, and tortoiseshell colours in cats are due to a missing piece of DNA in a part of the cat's genome that doesn't make proteins.

It’s a question I’ve always wanted the answer to.” For decades, ginger, tortoiseshell, and calico cats have fascinated scientists. In most mammals, humans included, red hair is caused by ...