The differences between CVDs can range from improper functioning of just one of the three cone cells ... black and white. Dogs, for instance, see the world in shades of blue and yellow. Some ...

Scientists have successfully cloned an endangered black-footed ferret, using preserved cells from a long-dead wild animal. This is the first time any native endangered species has been cloned in ...

In normal development, pigment cells start near the back of ... have been differently coloured (for example, black and white), the chimaeric animal often has striped or patchy coat patterns ...

But in many animals, the cells spread irregularly. That’s how you get a cat like Sylvester, who’s black from his back to his legs, but white down to his toes. Why exactly the melanocytes clump ...