However, some descriptors of cats are not actual breeds. Both tortoiseshell and calico fall into this category. They are not ...
Orange and tortoiseshell house cats (torties) have long been an enigma for hair coloration in mammals: now, the genetic basis ...
After launching into space almost 50 years ago, NASA’s Voyager probes are reaching the end of their lives. The nuclear ...
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 ...
The story begins with a seemingly simple observation: most orange cats are boys, while calico and tortoiseshell cats are ...
This difference is why almost all tortoiseshell cats are female; they have the two X chromosomes needed to produce the mix of black and orange fur. The same is true for calico cats, which are ...