[size=11px]I see what's going on.
If you know what family the kits are going to be in (eg. black, chocolate), you could just focus on the dilution separately. So, for example;
Black x Chocolate.
(Bb"Dd"oY) x (bb"Dd"oo)
Now, I know that the kits could be black and chocolate.
Let's put those in a box for safekeeping.
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Black Chocolate
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Lets take out the dilution genes.
Dd x Dd.
What can we tell from here? If both the parents pass down a dilute gene (d) then the kits could be dilute. If one or both pass down a dense gene (D) we would get dense kits.
So; we get dense AND dilutes in this litter. Cool.
Let's take out one of the families and work with that.
Black.
Since we could have both the dense AND the dilute of black, we have black and blue as possible colours. If we had dilution modifiers, tabby genes, etc., we would have more options, but this is the basic concept of understanding possibilities.
Chocolate.
Same here; dense and dilutes are possible.
What have we got down now?
Black, blue, chocolate, and lilac.
So...
Black x Chocolate
(Bb"Dd"oY) x (bb"Dd"oo)
Black, blue, chocolate, lilac.
Questions?