Silver is not really a color and can be very complicated to understand. Silver is actually lack of color. It is caused by the Inhibitor gene which keeps the background color from showing but allows the pattern to still come through.
Because the silver gene is a different gene then the color gene, any color of cat can also be silver. You can have a blue silver, a silver - snow, etc, etc. A silver brown would be a regular silver. So if someone says they have a silver, then it is genetically a brown bengal that carries the "I" (Inhibitor) gene.
So then, can you have a silver melanistic? Sure you can! Remember, that silver is a different gene then the gene that causes melanistic. A melanistic that is also a silver would be called a silver smoke. This cat looks like a white cat with a black "smokescreen" over it's whole body. The fur on top is black but all the fur underneath is pure white.
Silver is the most dominant gene. It is even dominant over brown. So it only takes one silver parent to get silver kittens. A silver can have brown kittens, even if mated to another silver. Again, the reason for this is that a regular silver is actually a brown/black cat but carries the "I" gene. So if the offspring doesn't receive the "I" gene from one of the parents, the cat will show it's true color.
Interestingly though, a brown (also called black, see explanation on the "brown" page) cannot ever "carry" for silver. So if you mate two brown cats, even if they had silver parents, you will still never get any silver kittens. The reason for this is because the "I" gene is dominant so if the cat carries for it, the cat will also show it.
If a cat is silver, sometimes it's very difficult to tell what "color" the cat actually is. Remember, a cat is always silver "something". If it's regular silver it is a brown with the silver inhibitor ('I") gene. This kind of cat is simply referred to as "silver". If it is a snow that carries the "I" gene it is a "silver snow". It may be difficult to tell what color the cat actually is because the silver gene masks the actual color of the cat. The key to determing silver is the color of the undercoat. If the hair close to the skin is pure white, the cat is a silver. That still does not tell us what color the cat actually is though, that just tells us that the cat is a silver-"something" (that the cat carries the "I" gene). Many times, even very experienced breeders can't tell is a cat is a silver-snow or a regular silver or a regular snow. Sometimes, test breeding is the only surefire way to tell. For an example, I have a seal mink snow that was believed to be a silver seal sepia because one of his parents was a sepia and one of his parents was a silver. Later, when he grew up his eye color turned out to be light aqua blue. Seal Sepias do not have blue eyes. Test breeding confirmed that this cat was a seal mink snow, not a silver and not a silver sepia. The cat never produced any silver kittens. His offspring also carried for seal lynx point. Seal sepias cannot carry for seal lynx point so he had to be a seal mink in order to pass the seal lynx point genes to his offspring. In this case it took 2 generations to know for a certainty what he was! |