Stanford Medicine researchers discover mechanisms of sex-linked genetic mutation giving rise to ginger felines.

SUMMERS: So I know that you've brought us three science stories that caught your attention this week. Tell us what they are. BARBER: The mutation that makes orange cats orange. KWONG: And a bike ...

So, the mutation is quite old." Only skin deep Besides a marmalade coat, could sex-linked orange be responsible for other qualities in orange cats? "The expectation, based on our observations ...