Originally Posted by CJandBilly
If the cat has a dark mark in bewtween the ears when he/she is a kitten, it will not be afflicted by the deafness.
This is not based on any scientific research, pure speculation
The mark that CAN appear in white kittens have nothing to do with the kittens hearing ability. It only indicates the kittens "true color". All white cats have another color under the white (the gene for white color only bleaches the true color).
And when it comes to how common deafness is in white cats and if blue eyed ones are more likely to develop deafness... Feel free ti guess. I yet haven't met one deaf white cat and I've met quite many. I believe that is has to do with breeding. Good breeders have excluded deaf cats from their breeding programs for years and years and they've avoided to mate white cats with each other, all this to minimize the risk for getting deaf kittens and I think this hard work has payed off.