The color genes can be a lot of fun to work out -- as you say, like a logic puzzle. Orientals are one of the more complicated breeds in terms of color genes. ;-)
Your Oriental stud looks like a black spotted tabby. The background color doesn't matter usually. It's the color of the spots and stripes that matters. If he's black spotted, then basically he's a black cat with agouti (turns on tabby expression), and the tabby pattern turned on by the agouti in this case is the spotted tabby pattern. Genetics people are still working on figuring spotting genes out, but we can express the genes as
A/-, B/-, D/-, C/cs, TS/-, O/y as a working system. A is agouti. B is black. D is non-dilute. C is full color, carrying a recessive colorpoint allele. TS is the spotted tabby pattern. The "O" is for orange color (aka red). He has the non-red gene, which is what is expressed because it's an X-linked gene. His other "gene" is nonexistent because he only has one X chromosome.
Your queen is a seal tortie point. That makes her: a/a, B/-, D/-, cs/cs, ?/?, O/o. The question marks are tabby pattern. It's hard to say which particular tabby pattern she carries because she's nonagouti (a), with the tabby pattern turned off and basically not visible. Because she's tortie, she must have both non-red and red alleles (O/o), which in females combines to give a tortoiseshell pattern.
If you are sure that your queen and stud produced a solid chocolate kitten, that would be a/a, b/b, D/-, C/-, ?/?, where "b" is chocolate. It is on the same genetic locus as black and is recessive to black.
If you are sure about the lilac lynx point, that would be A/-, b/b, d/d, cs/cs, ?/?. Lilac is the dilute of chocolate, hence d/d.
Okay, if all of the kitten colors and patterns are accurate, that gives us additional info about the parents. They would have to be:
Daddy A/a, B/b, C/cs, D/d, TS/?, and O/y.
Mom a/a, B/b, cs/cs, D/d, ?/?, and O/o.
Again it depends on whether the kitten colors were correct, but if so, we can now predict everything exactly except the specific type of tabby pattern. We know they can be spotted tabbies, but we don't know if they can be any other kind of tabby.
With each kitten, you have a 50% chance (on average) of being solid in color -- either all over or on the points. On average, there's a 25% chance of chocolate color; the other 75% would be black (seal). However, there's also a 25% chance of dilute (d/d), which means that some of the chocolates will be lilac. Some of the blacks will be blue (either blue points or blue tabbies).
You also have a 50% chance of male kittens being red -- either red point or red tabby. You have a 50% c chance of females being either tortie/torbie. Some of the torties/torbies may be pointed. Some may be solid tortie or torbie. The torties and torbies can be broken down into black (seal) torties or torbries and a few chocolate and lilac torties/torbies.
To really see how it works, I would need to create a big chart, the short blurb gives some idea.
All the colors of the rainbow almost!
Cristy
