Originally Posted by Jen
How about this one...
The mother is solid blue/gray (like a russian blue's color) no striping or white spots or anything. The kittens are all black and white of both sexes. One kitten is female and solid black. Waht would the father look like?
Father has to be black with white. There is an unlikely chance that he is tabby with white.
* If he were red, the female kitten would have to be a calico. Since she's not, he's black based.
* If he were dilute, the kittens would also have to be dilute. Dilute is recessive. (Additionally, the kittens are all black but carry blue from mom).
* If he were solid, the kittens would also be solid. Spotting is dominant. Since one kitten is not spotted, we also know he is heterozygous for spotted (ie: he is spotted, carrying solid)
The tabby is more difficult. He could be a heterozygous tabby (looks like a tabby, but carries non-tabby). However, this is unlikely. Tabby is dominant, so odds would have it that if he WAS tabby, half the kittens should be tabby. You can do the math to figure out the likelyhood, based upon how many kittens there were. But it sounds like more than four, so it's unlikely that he's tabby.