[offinoNem]

If your dog is indeed rednosed(color) it won't have black hairs in it's coat. All the areas that would have been black pigmented will be diluted to liver, like the nose leather. But it sounds like maybe you think that rednose is your dog's breed, rather than a color.

The "clear red" color that you've heard about actually has no black hairs anywhere in the coat, including the whiskers, but the nose is black. I've also heard it referred to as recessive fawn. This is caused at a different locus than the one that controls the rednose dilution. You can have both occur in one dog, but it would just look like a red rednose dog. An example of a breed with "clear red" coloration is the Irish setter.

As for what can produce what, it all depends on the individual genetic makeup of the dog. In teewig's example, the dam(red/rednose) was either a "clear red", which is the only way the brindle could have been carried unexpressed in non black dogs, or a liver dog, in which case she was genetically black(diluted) and also carried brindle.