Quote Originally Posted by littleindiangirl View Post
Super rexs are mock hairless or patchwork hairless, they aren't technically a true hairless rat which are a simple recessive genes.
Yup, rex is a dominant gene. One rex gene causes crimpy or curly fur, two genes causes hair loss. Some stay totally hairless, others have furry legs and faces, others morph and change their look on a regular basis. True hairless is a recessive gene. One gene creates a normal looking rat, two creates a totally hairless rat (though occasionally some will keep little socks or furry faces).